56553550 has 24 divisors (see below), whose sum is σ = 109765296. Its totient is φ = 21637440.

The previous prime is 56553547. The next prime is 56553569. The reversal of 56553550 is 5535565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23439 + ... + 25738.

It is an arithmetic number, because the mean of its divisors is an integer number (4573554).

Almost surely, 2^56553550 is an apocalyptic number.

56553550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56553550 is a deficient number, since it is larger than the sum of its proper divisors (53211746).

56553550 is a wasteful number, since it uses less digits than its factorization.

56553550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49212 (or 49207 counting only the distinct ones).

The product of its (nonzero) digits is 56250, while the sum is 34.

The square root of 56553550 is about 7520.2094385728. The cubic root of 56553550 is about 383.8427044932.

The spelling of 56553550 in words is "fifty-six million, five hundred fifty-three thousand, five hundred fifty".