155143904 has 24 divisors (see below), whose sum is σ = 323407728. Its totient is φ = 73008640.

The previous prime is 155143903. The next prime is 155143909. The reversal of 155143904 is 409341551.

It is a super-2 number, since 2×155143904² = 48139261896722432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155143903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142052 + ... + 143139.

It is an arithmetic number, because the mean of its divisors is an integer number (13475322).

Almost surely, 2^155143904 is an apocalyptic number.

It is an amenable number.

155143904 is an abundant number, since it is smaller than the sum of its proper divisors (168263824).

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

155143904 is a wasteful number, since it uses less digits than its factorization.

155143904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285218 (or 285210 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 155143904 is about 12455.6775809267. The cubic root of 155143904 is about 537.3347221417.

The spelling of 155143904 in words is "one hundred fifty-five million, one hundred forty-three thousand, nine hundred four".