56767521 has 8 divisors (see below), whose sum is σ = 76155040. Its totient is φ = 37612512.

The previous prime is 56767517. The next prime is 56767531. The reversal of 56767521 is 12576765.

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

It is not a de Polignac number, because 56767521 - 2² = 56767517 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 56767521.

It is not an unprimeable number, because it can be changed into a prime (56767511) 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, 57556 + ... + 58533.

It is an arithmetic number, because the mean of its divisors is an integer number (9519380).

Almost surely, 2^56767521 is an apocalyptic number.

It is an amenable number.

56767521 is a deficient number, since it is larger than the sum of its proper divisors (19387519).

56767521 is a wasteful number, since it uses less digits than its factorization.

56767521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116255.

The product of its digits is 88200, while the sum is 39.

The square root of 56767521 is about 7534.4224065286. The cubic root of 56767521 is about 384.3261863321.

The spelling of 56767521 in words is "fifty-six million, seven hundred sixty-seven thousand, five hundred twenty-one".