56736551 has 4 divisors (see below), whose sum is σ = 57084792. Its totient is φ = 56388312.

The previous prime is 56736487. The next prime is 56736587. The reversal of 56736551 is 15563765.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56736551 - 2⁶ = 56736487 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 (56736751) 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, 173876 + ... + 174201.

It is an arithmetic number, because the mean of its divisors is an integer number (14271198).

Almost surely, 2^56736551 is an apocalyptic number.

56736551 is a deficient number, since it is larger than the sum of its proper divisors (348241).

56736551 is a wasteful number, since it uses less digits than its factorization.

56736551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348240.

The product of its digits is 94500, while the sum is 38.

The square root of 56736551 is about 7532.3668922856. The cubic root of 56736551 is about 384.2562828206.

The spelling of 56736551 in words is "fifty-six million, seven hundred thirty-six thousand, five hundred fifty-one".