55891776 has 28 divisors (see below), whose sum is σ = 147880832. Its totient is φ = 18630528.

The previous prime is 55891751. The next prime is 55891783. The reversal of 55891776 is 67719855.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145360 + ... + 145743.

Almost surely, 2^55891776 is an apocalyptic number.

It is an amenable number.

55891776 is an abundant number, since it is smaller than the sum of its proper divisors (91989056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55891776 is a wasteful number, since it uses less digits than its factorization.

55891776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291118 (or 291108 counting only the distinct ones).

The product of its digits is 529200, while the sum is 48.

The square root of 55891776 is about 7476.0802563910. The cubic root of 55891776 is about 382.3396192077.

The spelling of 55891776 in words is "fifty-five million, eight hundred ninety-one thousand, seven hundred seventy-six".