56534421 has 16 divisors (see below), whose sum is σ = 78174720. Its totient is φ = 36303360.

The previous prime is 56534419. The next prime is 56534453. The reversal of 56534421 is 12443565.

It is not a de Polignac number, because 56534421 - 2¹ = 56534419 is a prime.

It is a super-2 number, since 2×56534421² = 6392281515610482, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56534221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20365 + ... + 22973.

It is an arithmetic number, because the mean of its divisors is an integer number (4885920).

Almost surely, 2^56534421 is an apocalyptic number.

It is an amenable number.

56534421 is a deficient number, since it is larger than the sum of its proper divisors (21640299).

56534421 is a wasteful number, since it uses less digits than its factorization.

56534421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876.

The product of its digits is 14400, while the sum is 30.

The square root of 56534421 is about 7518.9374914279. The cubic root of 56534421 is about 383.7994218870.

Adding to 56534421 its reverse (12443565), we get a palindrome (68977986).

The spelling of 56534421 in words is "fifty-six million, five hundred thirty-four thousand, four hundred twenty-one".