55251508 has 54 divisors (see below), whose sum is σ = 109866246. Its totient is φ = 24283584.

The previous prime is 55251503. The next prime is 55251509. The reversal of 55251508 is 80515255.

It can be written as a sum of positive squares in 3 ways, for example, as 2862864 + 52388644 = 1692^2 + 7238^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55251508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55251503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1175541 + ... + 1175587.

Almost surely, 2^55251508 is an apocalyptic number.

It is an amenable number.

55251508 is a deficient number, since it is larger than the sum of its proper divisors (54614738).

55251508 is a wasteful number, since it uses less digits than its factorization.

55251508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 55251508 is about 7433.1358120244. The cubic root of 55251508 is about 380.8740452986.

The spelling of 55251508 in words is "fifty-five million, two hundred fifty-one thousand, five hundred eight".