52185155 has 16 divisors (see below), whose sum is σ = 72334944. Its totient is φ = 35719680.

The previous prime is 52185151. The next prime is 52185157. The reversal of 52185155 is 55158125.

It is not a de Polignac number, because 52185155 - 2² = 52185151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52185151) 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, 26972 + ... + 28841.

It is an arithmetic number, because the mean of its divisors is an integer number (4520934).

Almost surely, 2^52185155 is an apocalyptic number.

52185155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

52185155 is a deficient number, since it is larger than the sum of its proper divisors (20149789).

52185155 is a wasteful number, since it uses less digits than its factorization.

52185155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55846.

The product of its digits is 10000, while the sum is 32.

The square root of 52185155 is about 7223.9293324340. The cubic root of 52185155 is about 373.6935993162.

The spelling of 52185155 in words is "fifty-two million, one hundred eighty-five thousand, one hundred fifty-five".