401551504 has 20 divisors (see below), whose sum is σ = 778972464. Its totient is φ = 200526368.

The previous prime is 401551483. The next prime is 401551537. The reversal of 401551504 is 405155104.

It is a happy number.

It is a super-2 number, since 2×401551504² = 322487220729324032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1942 + ... + 28405.

Almost surely, 2^401551504 is an apocalyptic number.

It is an amenable number.

401551504 is a deficient number, since it is larger than the sum of its proper divisors (377420960).

401551504 is a wasteful number, since it uses less digits than its factorization.

401551504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31182 (or 31176 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 401551504 is about 20038.7500608197. The cubic root of 401551504 is about 737.7577022999.

The spelling of 401551504 in words is "four hundred one million, five hundred fifty-one thousand, five hundred four".