55909312 has 28 divisors (see below), whose sum is σ = 111339376. Its totient is φ = 27855360.

The previous prime is 55909309. The next prime is 55909333. The reversal of 55909312 is 21390955.

It is a happy number.

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, 18637 + ... + 21427.

Almost surely, 2^55909312 is an apocalyptic number.

It is an amenable number.

55909312 is a deficient number, since it is larger than the sum of its proper divisors (55430064).

55909312 is a wasteful number, since it uses less digits than its factorization.

55909312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3116 (or 3106 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 55909312 is about 7477.2529715130. The cubic root of 55909312 is about 382.3796012764.

The spelling of 55909312 in words is "fifty-five million, nine hundred nine thousand, three hundred twelve".