156115550 has 24 divisors (see below), whose sum is σ = 290887632. Its totient is φ = 62336000.

The previous prime is 156115549. The next prime is 156115579. The reversal of 156115550 is 55511651.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29615 + ... + 34485.

It is an arithmetic number, because the mean of its divisors is an integer number (12120318).

Almost surely, 2^156115550 is an apocalyptic number.

156115550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156115550 is a deficient number, since it is larger than the sum of its proper divisors (134772082).

156115550 is a wasteful number, since it uses less digits than its factorization.

156115550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5524 (or 5519 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

The square root of 156115550 is about 12494.6208425866. The cubic root of 156115550 is about 538.4541408455.

The spelling of 156115550 in words is "one hundred fifty-six million, one hundred fifteen thousand, five hundred fifty".