155452920 has 64 divisors (see below), whose sum is σ = 532984320. Its totient is φ = 35531904.

The previous prime is 155452901. The next prime is 155452933. The reversal of 155452920 is 29254551.

It is a super-2 number, since 2×155452920² = 48331220673052800, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 91692 + ... + 93371.

It is an arithmetic number, because the mean of its divisors is an integer number (8327880).

Almost surely, 2^155452920 is an apocalyptic number.

155452920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155452920 is an abundant number, since it is smaller than the sum of its proper divisors (377531400).

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

155452920 is a wasteful number, since it uses less digits than its factorization.

155452920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185084 (or 185080 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 155452920 is about 12468.0760344169. The cubic root of 155452920 is about 537.6912404044.

The spelling of 155452920 in words is "one hundred fifty-five million, four hundred fifty-two thousand, nine hundred twenty".