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22401301 = 131723177
BaseRepresentation
bin101010101110…
…1000100010101
31120011002210211
41111131010111
521213320201
62120045421
7361256626
oct125350425
946132724
1022401301
111171047a
127603871
134844410
142d91a4d
151e77651
hex155d115

22401301 has 4 divisors (see below), whose sum is σ = 24124492. Its totient is φ = 20678112.

The previous prime is 22401299. The next prime is 22401331. The reversal of 22401301 is 10310422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1232100 + 21169201 = 1110^2 + 4601^2 .

It is not a de Polignac number, because 22401301 - 21 = 22401299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 1723177 = 22401301 / (2 + 2 + 4 + 0 + 1 + 3 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22401331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861576 + ... + 861601.

It is an arithmetic number, because the mean of its divisors is an integer number (6031123).

Almost surely, 222401301 is an apocalyptic number.

It is an amenable number.

22401301 is a deficient number, since it is larger than the sum of its proper divisors (1723191).

22401301 is a wasteful number, since it uses less digits than its factorization.

22401301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723190.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22401301 is about 4733.0012676947. The cubic root of 22401301 is about 281.8974066386.

Adding to 22401301 its reverse (10310422), we get a palindrome (32711723).

The spelling of 22401301 in words is "twenty-two million, four hundred one thousand, three hundred one".

Divisors: 1 13 1723177 22401301