103621401 has 24 divisors (see below), whose sum is σ = 161703360. Its totient is φ = 63563616.

The previous prime is 103621387. The next prime is 103621411. The reversal of 103621401 is 104126301.

It is a happy number.

103621401 is a `hidden beast` number, since 1 + 0 + 3 + 621 + 40 + 1 = 666.

It is not a de Polignac number, because 103621401 - 2⁵ = 103621369 is a prime.

It is a super-3 number, since 3×103621401³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (103621411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40770 + ... + 43236.

It is an arithmetic number, because the mean of its divisors is an integer number (6737640).

Almost surely, 2^103621401 is an apocalyptic number.

It is an amenable number.

103621401 is a deficient number, since it is larger than the sum of its proper divisors (58081959).

103621401 is a wasteful number, since it uses less digits than its factorization.

103621401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2845 (or 2842 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 103621401 is about 10179.4597597318. The cubic root of 103621401 is about 469.6955943468.

Adding to 103621401 its reverse (104126301), we get a palindrome (207747702).

The spelling of 103621401 in words is "one hundred three million, six hundred twenty-one thousand, four hundred one".