56807551 has 8 divisors (see below), whose sum is σ = 57523104. Its totient is φ = 56095200.

The previous prime is 56807533. The next prime is 56807561. The reversal of 56807551 is 15570865.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56807551 - 2²³ = 48418943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56807551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56807521) 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, 74665 + ... + 75421.

It is an arithmetic number, because the mean of its divisors is an integer number (7190388).

Almost surely, 2^56807551 is an apocalyptic number.

56807551 is a deficient number, since it is larger than the sum of its proper divisors (715553).

56807551 is a wasteful number, since it uses less digits than its factorization.

56807551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601.

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 56807551 is about 7537.0784127538. The cubic root of 56807551 is about 384.4165018400.

It can be divided in two parts, 5680 and 7551, that added together give a palindrome (13231).

The spelling of 56807551 in words is "fifty-six million, eight hundred seven thousand, five hundred fifty-one".