56537887 has 16 divisors (see below), whose sum is σ = 69253632. Its totient is φ = 45096480.

The previous prime is 56537879. The next prime is 56537891. The reversal of 56537887 is 78873565.

It is a cyclic number.

It is not a de Polignac number, because 56537887 - 2³ = 56537879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56537887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56537867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1212 + ... + 10702.

It is an arithmetic number, because the mean of its divisors is an integer number (4328352).

Almost surely, 2^56537887 is an apocalyptic number.

56537887 is a deficient number, since it is larger than the sum of its proper divisors (12715745).

56537887 is a wasteful number, since it uses less digits than its factorization.

56537887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9558.

The product of its digits is 1411200, while the sum is 49.

The square root of 56537887 is about 7519.1679725885. The cubic root of 56537887 is about 383.8072650239.

The spelling of 56537887 in words is "fifty-six million, five hundred thirty-seven thousand, eight hundred eighty-seven".