155431052 has 12 divisors (see below), whose sum is σ = 310862160. Its totient is φ = 66613296.

The previous prime is 155431013. The next prime is 155431063. The reversal of 155431052 is 250134551.

155431052 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 2775527 + ... + 2775582.

It is an arithmetic number, because the mean of its divisors is an integer number (25905180).

Almost surely, 2^155431052 is an apocalyptic number.

It is an amenable number.

155431052 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

155431052 is a wasteful number, since it uses less digits than its factorization.

155431052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5551120 (or 5551118 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 155431052 is about 12467.1990438911. The cubic root of 155431052 is about 537.6660263751. Note that the first 3 decimals are identical.

The spelling of 155431052 in words is "one hundred fifty-five million, four hundred thirty-one thousand, fifty-two".