56401554 has 16 divisors (see below), whose sum is σ = 123058080. Its totient is φ = 17091360.

The previous prime is 56401537. The next prime is 56401559. The reversal of 56401554 is 45510465.

It is a super-2 number, since 2×56401554² = 6362270587229832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56401559) 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, 427219 + ... + 427350.

It is an arithmetic number, because the mean of its divisors is an integer number (7691130).

Almost surely, 2^56401554 is an apocalyptic number.

56401554 is an abundant number, since it is smaller than the sum of its proper divisors (66656526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56401554 is a wasteful number, since it uses less digits than its factorization.

56401554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854585.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 56401554 is about 7510.0968036371. The cubic root of 56401554 is about 383.4985180129.

The spelling of 56401554 in words is "fifty-six million, four hundred one thousand, five hundred fifty-four".