56521767 has 8 divisors (see below), whose sum is σ = 75398400. Its totient is φ = 37663160.

The previous prime is 56521763. The next prime is 56521769. The reversal of 56521767 is 76712565.

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 56521767 - 2² = 56521763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56521763) 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, 7042 + ... + 12752.

It is an arithmetic number, because the mean of its divisors is an integer number (9424800).

Almost surely, 2^56521767 is an apocalyptic number.

56521767 is a deficient number, since it is larger than the sum of its proper divisors (18876633).

56521767 is a wasteful number, since it uses less digits than its factorization.

56521767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9013.

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

The square root of 56521767 is about 7518.0959690603. The cubic root of 56521767 is about 383.7707847004.

The spelling of 56521767 in words is "fifty-six million, five hundred twenty-one thousand, seven hundred sixty-seven".