55891568 has 10 divisors (see below), whose sum is σ = 108289944. Its totient is φ = 27945776.

The previous prime is 55891567. The next prime is 55891639. The reversal of 55891568 is 86519855.

55891568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55891567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1746596 + ... + 1746627.

Almost surely, 2^55891568 is an apocalyptic number.

It is an amenable number.

55891568 is a deficient number, since it is larger than the sum of its proper divisors (52398376).

55891568 is a wasteful number, since it uses less digits than its factorization.

55891568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493231 (or 3493225 counting only the distinct ones).

The product of its digits is 432000, while the sum is 47.

The square root of 55891568 is about 7476.0663453450. The cubic root of 55891568 is about 382.3391449177.

The spelling of 55891568 in words is "fifty-five million, eight hundred ninety-one thousand, five hundred sixty-eight".