55142160 has 40 divisors (see below), whose sum is σ = 170941440. Its totient is φ = 14704512.

The previous prime is 55142147. The next prime is 55142179. The reversal of 55142160 is 6124155.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 55142160.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 114640 + ... + 115119.

It is an arithmetic number, because the mean of its divisors is an integer number (4273536).

Almost surely, 2^55142160 is an apocalyptic number.

It is an amenable number.

55142160 is an abundant number, since it is smaller than the sum of its proper divisors (115799280).

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

55142160 is a wasteful number, since it uses less digits than its factorization.

55142160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229775 (or 229769 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 55142160 is about 7425.7767270502. The cubic root of 55142160 is about 380.6226173475.

The spelling of 55142160 in words is "fifty-five million, one hundred forty-two thousand, one hundred sixty".