155642160 has 40 divisors (see below), whose sum is σ = 482491440. Its totient is φ = 41504512.

The previous prime is 155642141. The next prime is 155642161. The reversal of 155642160 is 61246551.

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 (30).

It is not an unprimeable number, because it can be changed into a prime (155642161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324015 + ... + 324494.

It is an arithmetic number, because the mean of its divisors is an integer number (12062286).

Almost surely, 2^155642160 is an apocalyptic number.

155642160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155642160 is an abundant number, since it is smaller than the sum of its proper divisors (326849280).

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

155642160 is a wasteful number, since it uses less digits than its factorization.

155642160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648525 (or 648519 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 155642160 is about 12475.6627078484. The cubic root of 155642160 is about 537.9093373665.

The spelling of 155642160 in words is "one hundred fifty-five million, six hundred forty-two thousand, one hundred sixty".