155905152 has 64 divisors (see below), whose sum is σ = 445992960. Its totient is φ = 47969280.

The previous prime is 155905117. The next prime is 155905153. The reversal of 155905152 is 251509551.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (155905153) by changing a digit.

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, 10624 + ... + 20607.

It is an arithmetic number, because the mean of its divisors is an integer number (6968640).

Almost surely, 2^155905152 is an apocalyptic number.

155905152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155905152 is an abundant number, since it is smaller than the sum of its proper divisors (290087808).

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

155905152 is a wasteful number, since it uses less digits than its factorization.

155905152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31261 (or 31249 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 33.

The square root of 155905152 is about 12486.1984607005. The cubic root of 155905152 is about 538.2121393148.

The spelling of 155905152 in words is "one hundred fifty-five million, nine hundred five thousand, one hundred fifty-two".