55978675 has 6 divisors (see below), whose sum is σ = 69413588. Its totient is φ = 44782920.

The previous prime is 55978667. The next prime is 55978691. The reversal of 55978675 is 57687955.

It is not a de Polignac number, because 55978675 - 2³ = 55978667 is a prime.

It is a super-2 number, since 2×55978675² = 6267224109511250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1119549 + ... + 1119598.

Almost surely, 2^55978675 is an apocalyptic number.

55978675 is a deficient number, since it is larger than the sum of its proper divisors (13434913).

55978675 is a wasteful number, since it uses less digits than its factorization.

55978675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239157 (or 2239152 counting only the distinct ones).

The product of its digits is 2646000, while the sum is 52.

The square root of 55978675 is about 7481.8898013804. The cubic root of 55978675 is about 382.5376669870.

The spelling of 55978675 in words is "fifty-five million, nine hundred seventy-eight thousand, six hundred seventy-five".