56499421 has 4 divisors (see below), whose sum is σ = 61635744. Its totient is φ = 51363100.

The previous prime is 56499419. The next prime is 56499437. The reversal of 56499421 is 12499465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56499421 - 2¹ = 56499419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56499451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2568145 + ... + 2568166.

It is an arithmetic number, because the mean of its divisors is an integer number (15408936).

Almost surely, 2^56499421 is an apocalyptic number.

It is an amenable number.

56499421 is a deficient number, since it is larger than the sum of its proper divisors (5136323).

56499421 is a wasteful number, since it uses less digits than its factorization.

56499421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5136322.

The product of its digits is 77760, while the sum is 40.

The square root of 56499421 is about 7516.6096745807. The cubic root of 56499421 is about 383.7202031705.

The spelling of 56499421 in words is "fifty-six million, four hundred ninety-nine thousand, four hundred twenty-one".