2155412532 has 48 divisors (see below), whose sum is σ = 6189905792. Its totient is φ = 568460160.

The previous prime is 2155412509. The next prime is 2155412563. The reversal of 2155412532 is 2352145512.

It is a self number, because there is not a number n which added to its sum of digits gives 2155412532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 985819 + ... + 988002.

Almost surely, 2^2155412532 is an apocalyptic number.

It is an amenable number.

2155412532 is an abundant number, since it is smaller than the sum of its proper divisors (4034493260).

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

2155412532 is a wasteful number, since it uses less digits than its factorization.

2155412532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973848 (or 1973846 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 2155412532 is about 46426.4206244677. The cubic root of 2155412532 is about 1291.7450357464.

The spelling of 2155412532 in words is "two billion, one hundred fifty-five million, four hundred twelve thousand, five hundred thirty-two".