915145155 has 32 divisors (see below), whose sum is σ = 1649229120. Its totient is φ = 481386240.

The previous prime is 915145129. The next prime is 915145157. The reversal of 915145155 is 551541519.

915145155 is a `hidden beast` number, since 9 + 151 + 451 + 55 = 666.

It is not a de Polignac number, because 915145155 - 2¹⁶ = 915079619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (915145157) 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, 36576 + ... + 56285.

It is an arithmetic number, because the mean of its divisors is an integer number (51538410).

Almost surely, 2^915145155 is an apocalyptic number.

915145155 is a deficient number, since it is larger than the sum of its proper divisors (734083965).

915145155 is a wasteful number, since it uses less digits than its factorization.

915145155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92948 (or 92942 counting only the distinct ones).

The product of its digits is 22500, while the sum is 36.

The square root of 915145155 is about 30251.3661674973. The cubic root of 915145155 is about 970.8750225834.

It can be divided in two parts, 91514 and 5155, that added together give a palindrome (96669).

The spelling of 915145155 in words is "nine hundred fifteen million, one hundred forty-five thousand, one hundred fifty-five".