55928739 has 16 divisors (see below), whose sum is σ = 75494144. Its totient is φ = 36828000.

The previous prime is 55928737. The next prime is 55928749. The reversal of 55928739 is 93782955.

It is a happy number.

It is not a de Polignac number, because 55928739 - 2¹ = 55928737 is a prime.

It is a super-2 number, since 2×55928739² = 6256047692260242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55928737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149757 + ... + 150129.

It is an arithmetic number, because the mean of its divisors is an integer number (4718384).

Almost surely, 2^55928739 is an apocalyptic number.

55928739 is a deficient number, since it is larger than the sum of its proper divisors (19565405).

55928739 is a wasteful number, since it uses less digits than its factorization.

55928739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858.

The product of its digits is 680400, while the sum is 48.

The square root of 55928739 is about 7478.5519320253. The cubic root of 55928739 is about 382.4238850640.

The spelling of 55928739 in words is "fifty-five million, nine hundred twenty-eight thousand, seven hundred thirty-nine".