56552287 has 4 divisors (see below), whose sum is σ = 61693416. Its totient is φ = 51411160.

The previous prime is 56552269. The next prime is 56552323. The reversal of 56552287 is 78225565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56552287 - 2⁷ = 56552159 is a prime.

It is a super-2 number, since 2×56552287² = 6396322329860738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56552257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2570548 + ... + 2570569.

It is an arithmetic number, because the mean of its divisors is an integer number (15423354).

Almost surely, 2^56552287 is an apocalyptic number.

56552287 is a deficient number, since it is larger than the sum of its proper divisors (5141129).

56552287 is a wasteful number, since it uses less digits than its factorization.

56552287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5141128.

The product of its digits is 168000, while the sum is 40.

The square root of 56552287 is about 7520.1254643789. The cubic root of 56552287 is about 383.8398470425.

The spelling of 56552287 in words is "fifty-six million, five hundred fifty-two thousand, two hundred eighty-seven".