40556001 has 8 divisors (see below), whose sum is σ = 54347200. Its totient is φ = 26901072.

The previous prime is 40555987. The next prime is 40556003. The reversal of 40556001 is 10065504.

It is a happy number.

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

It is not a de Polignac number, because 40556001 - 2⁷ = 40555873 is a prime.

It is a super-2 number, since 2×40556001² = 3289578434224002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40556003) 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, 33370 + ... + 34563.

It is an arithmetic number, because the mean of its divisors is an integer number (6793400).

Almost surely, 2^40556001 is an apocalyptic number.

It is an amenable number.

40556001 is a deficient number, since it is larger than the sum of its proper divisors (13791199).

40556001 is a wasteful number, since it uses less digits than its factorization.

40556001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68135.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 40556001 is about 6368.3593648600. The cubic root of 40556001 is about 343.5724841686.

The spelling of 40556001 in words is "forty million, five hundred fifty-six thousand, one".