55315928 has 16 divisors (see below), whose sum is σ = 103838760. Its totient is φ = 27625600.

The previous prime is 55315927. The next prime is 55315933. The reversal of 55315928 is 82951355.

It is a junction number, because it is equal to n+sod(n) for n = 55315891 and 55315900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55315921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4208 + ... + 11328.

Almost surely, 2^55315928 is an apocalyptic number.

It is an amenable number.

55315928 is a deficient number, since it is larger than the sum of its proper divisors (48522832).

55315928 is a wasteful number, since it uses less digits than its factorization.

55315928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8098 (or 8094 counting only the distinct ones).

The product of its digits is 54000, while the sum is 38.

The square root of 55315928 is about 7437.4678486700. The cubic root of 55315928 is about 381.0220133647.

The spelling of 55315928 in words is "fifty-five million, three hundred fifteen thousand, nine hundred twenty-eight".