155745315 has 32 divisors (see below), whose sum is σ = 302054400. Its totient is φ = 75512160.

The previous prime is 155745287. The next prime is 155745353. The reversal of 155745315 is 513547551.

It is a happy number.

155745315 is a `hidden beast` number, since 1 + 55 + 74 + 531 + 5 = 666.

It is not a de Polignac number, because 155745315 - 2¹² = 155741219 is a prime.

It is a super-3 number, since 3×155745315³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155745315.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50955 + ... + 53924.

It is an arithmetic number, because the mean of its divisors is an integer number (9439200).

Almost surely, 2^155745315 is an apocalyptic number.

155745315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155745315 is a deficient number, since it is larger than the sum of its proper divisors (146309085).

155745315 is a wasteful number, since it uses less digits than its factorization.

155745315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104904 (or 104898 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 155745315 is about 12479.7962723756. The cubic root of 155745315 is about 538.0281478987.

The spelling of 155745315 in words is "one hundred fifty-five million, seven hundred forty-five thousand, three hundred fifteen".