155232915 has 16 divisors (see below), whose sum is σ = 248529408. Its totient is φ = 82738656.

The previous prime is 155232901. The next prime is 155232937. The reversal of 155232915 is 519232551.

It is not a de Polignac number, because 155232915 - 2²² = 151038611 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 38694 + ... + 42516.

It is an arithmetic number, because the mean of its divisors is an integer number (15533088).

Almost surely, 2^155232915 is an apocalyptic number.

155232915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155232915 is a deficient number, since it is larger than the sum of its proper divisors (93296493).

155232915 is a wasteful number, since it uses less digits than its factorization.

155232915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6538.

The product of its digits is 13500, while the sum is 33.

The square root of 155232915 is about 12459.2501780805. The cubic root of 155232915 is about 537.4374645111.

The spelling of 155232915 in words is "one hundred fifty-five million, two hundred thirty-two thousand, nine hundred fifteen".