55157360 has 20 divisors (see below), whose sum is σ = 128241048. Its totient is φ = 22062912.

The previous prime is 55157357. The next prime is 55157363. The reversal of 55157360 is 6375155.

It is an interprime number because it is at equal distance from previous prime (55157357) and next prime (55157363).

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55157363) 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 3 ways as a sum of consecutive naturals, for example, 344654 + ... + 344813.

Almost surely, 2^55157360 is an apocalyptic number.

It is an amenable number.

55157360 is an abundant number, since it is smaller than the sum of its proper divisors (73083688).

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

55157360 is a wasteful number, since it uses less digits than its factorization.

55157360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689480 (or 689474 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 55157360 is about 7426.8001184898. The cubic root of 55157360 is about 380.6575871557.

The spelling of 55157360 in words is "fifty-five million, one hundred fifty-seven thousand, three hundred sixty".