155123864 has 32 divisors (see below), whose sum is σ = 333309600. Its totient is φ = 66301440.

The previous prime is 155123851. The next prime is 155123873. The reversal of 155123864 is 468321551.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 18224 + ... + 25344.

It is an arithmetic number, because the mean of its divisors is an integer number (10415925).

Almost surely, 2^155123864 is an apocalyptic number.

155123864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155123864 is an abundant number, since it is smaller than the sum of its proper divisors (178185736).

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

155123864 is a wasteful number, since it uses less digits than its factorization.

155123864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7523 (or 7519 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 155123864 is about 12454.8731025250. The cubic root of 155123864 is about 537.3115852319.

The spelling of 155123864 in words is "one hundred fifty-five million, one hundred twenty-three thousand, eight hundred sixty-four".