155431152 has 30 divisors (see below), whose sum is σ = 434991752. Its totient is φ = 51810336.

The previous prime is 155431147. The next prime is 155431163. The reversal of 155431152 is 251134551.

155431152 is a `hidden beast` number, since 1 + 5 + 543 + 115 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 539548 + ... + 539835.

Almost surely, 2^155431152 is an apocalyptic number.

155431152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155431152 is an abundant number, since it is smaller than the sum of its proper divisors (279560600).

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

155431152 is a wasteful number, since it uses less digits than its factorization.

155431152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079397 (or 1079388 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 155431152 is about 12467.2030544144. The cubic root of 155431152 is about 537.6661416815. Note that the first 3 decimals are identical.

The spelling of 155431152 in words is "one hundred fifty-five million, four hundred thirty-one thousand, one hundred fifty-two".