55928331 has 12 divisors (see below), whose sum is σ = 80876640. Its totient is φ = 37243440.

The previous prime is 55928321. The next prime is 55928347. The reversal of 55928331 is 13382955.

55928331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55928331 - 2⁹ = 55927819 is a prime.

It is a super-2 number, since 2×55928331² = 6255956416891122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55928311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6361 + ... + 12341.

It is an arithmetic number, because the mean of its divisors is an integer number (6739720).

Almost surely, 2^55928331 is an apocalyptic number.

55928331 is a deficient number, since it is larger than the sum of its proper divisors (24948309).

55928331 is a wasteful number, since it uses less digits than its factorization.

55928331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7026 (or 7023 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 55928331 is about 7478.5246539675. The cubic root of 55928331 is about 382.4229551346.

The spelling of 55928331 in words is "fifty-five million, nine hundred twenty-eight thousand, three hundred thirty-one".