40551401 has 8 divisors (see below), whose sum is σ = 44471808. Its totient is φ = 36670000.

The previous prime is 40551361. The next prime is 40551431. The reversal of 40551401 is 10415504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40551401 - 2¹⁸ = 40289257 is a prime.

It is a super-2 number, since 2×40551401² = 3288832246125602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40551431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7550 + ... + 11751.

It is an arithmetic number, because the mean of its divisors is an integer number (5558976).

Almost surely, 2^40551401 is an apocalyptic number.

It is an amenable number.

40551401 is a deficient number, since it is larger than the sum of its proper divisors (3920407).

40551401 is a wasteful number, since it uses less digits than its factorization.

40551401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19503.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 40551401 is about 6367.9981940952. The cubic root of 40551401 is about 343.5594939563.

Adding to 40551401 its reverse (10415504), we get a palindrome (50966905).

The spelling of 40551401 in words is "forty million, five hundred fifty-one thousand, four hundred one".