55695578 has 12 divisors (see below), whose sum is σ = 85537098. Its totient is φ = 27198360.

The previous prime is 55695551. The next prime is 55695583. The reversal of 55695578 is 87559655.

It can be written as a sum of positive squares in only one way, i.e., 41049649 + 14645929 = 6407^2 + 3827^2 .

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, 3833 + ... + 11228.

Almost surely, 2^55695578 is an apocalyptic number.

55695578 is a deficient number, since it is larger than the sum of its proper divisors (29841520).

55695578 is a wasteful number, since it uses less digits than its factorization.

55695578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15149 (or 15106 counting only the distinct ones).

The product of its digits is 1890000, while the sum is 50.

The square root of 55695578 is about 7462.9470050376. The cubic root of 55695578 is about 381.8917166107.

The spelling of 55695578 in words is "fifty-five million, six hundred ninety-five thousand, five hundred seventy-eight".