155255020 has 48 divisors (see below), whose sum is σ = 334756800. Its totient is φ = 60459776.

The previous prime is 155255017. The next prime is 155255027. The reversal of 155255020 is 20552551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (155255027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157449 + ... + 158431.

It is an arithmetic number, because the mean of its divisors is an integer number (6974100).

Almost surely, 2^155255020 is an apocalyptic number.

155255020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155255020 is an abundant number, since it is smaller than the sum of its proper divisors (179501780).

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

155255020 is a wasteful number, since it uses less digits than its factorization.

155255020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194 (or 1192 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 155255020 is about 12460.1372384095. The cubic root of 155255020 is about 537.4629734725.

The spelling of 155255020 in words is "one hundred fifty-five million, two hundred fifty-five thousand, twenty".