56763521 has 4 divisors (see below), whose sum is σ = 56935344. Its totient is φ = 56591700.

The previous prime is 56763503. The next prime is 56763533. The reversal of 56763521 is 12536765.

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 56763521 - 2¹⁴ = 56747137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56763541) 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, 85415 + ... + 86076.

It is an arithmetic number, because the mean of its divisors is an integer number (14233836).

Almost surely, 2^56763521 is an apocalyptic number.

It is an amenable number.

56763521 is a deficient number, since it is larger than the sum of its proper divisors (171823).

56763521 is a wasteful number, since it uses less digits than its factorization.

56763521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171822.

The product of its digits is 37800, while the sum is 35.

The square root of 56763521 is about 7534.1569535018. The cubic root of 56763521 is about 384.3171592169.

The spelling of 56763521 in words is "fifty-six million, seven hundred sixty-three thousand, five hundred twenty-one".