55507256 has 16 divisors (see below), whose sum is σ = 118944240. Its totient is φ = 23788800.

The previous prime is 55507241. The next prime is 55507313. The reversal of 55507256 is 65270555.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 495545 + ... + 495656.

It is an arithmetic number, because the mean of its divisors is an integer number (7434015).

Almost surely, 2^55507256 is an apocalyptic number.

55507256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

55507256 is an abundant number, since it is smaller than the sum of its proper divisors (63436984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55507256 is a wasteful number, since it uses less digits than its factorization.

55507256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991214 (or 991210 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 35.

The square root of 55507256 is about 7450.3191877932. The cubic root of 55507256 is about 381.4608037453.

The spelling of 55507256 in words is "fifty-five million, five hundred seven thousand, two hundred fifty-six".