155315270 has 64 divisors (see below), whose sum is σ = 323592192. Its totient is φ = 53136000.

The previous prime is 155315261. The next prime is 155315273. The reversal of 155315270 is 72513551.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155315273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125555 + ... + 126785.

It is an arithmetic number, because the mean of its divisors is an integer number (5056128).

Almost surely, 2^155315270 is an apocalyptic number.

155315270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155315270 is an abundant number, since it is smaller than the sum of its proper divisors (168276922).

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

155315270 is a wasteful number, since it uses less digits than its factorization.

155315270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 155315270 is about 12462.5547140223. The cubic root of 155315270 is about 537.5324891124.

The spelling of 155315270 in words is "one hundred fifty-five million, three hundred fifteen thousand, two hundred seventy".