56540451 has 16 divisors (see below), whose sum is σ = 82418688. Its totient is φ = 34192800.

The previous prime is 56540423. The next prime is 56540461. The reversal of 56540451 is 15404565.

It is not a de Polignac number, because 56540451 - 2¹⁵ = 56507683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56540411) 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, 16270 + ... + 19436.

It is an arithmetic number, because the mean of its divisors is an integer number (5151168).

Almost surely, 2^56540451 is an apocalyptic number.

56540451 is a deficient number, since it is larger than the sum of its proper divisors (25878237).

56540451 is a wasteful number, since it uses less digits than its factorization.

56540451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722.

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

The square root of 56540451 is about 7519.3384682431. The cubic root of 56540451 is about 383.8130668381.

It can be divided in two parts, 5 and 6540451, that added together give a palindrome (6540456).

The spelling of 56540451 in words is "fifty-six million, five hundred forty thousand, four hundred fifty-one".