53157181 has 16 divisors (see below), whose sum is σ = 70174080. Its totient is φ = 38983680.

The previous prime is 53157173. The next prime is 53157187. The reversal of 53157181 is 18175135.

It is a cyclic number.

It is not a de Polignac number, because 53157181 - 2³ = 53157173 is a prime.

It is a super-2 number, since 2×53157181² = 5651371783733522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53157187) 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, 18996 + ... + 21613.

It is an arithmetic number, because the mean of its divisors is an integer number (4385880).

Almost surely, 2^53157181 is an apocalyptic number.

It is an amenable number.

53157181 is a deficient number, since it is larger than the sum of its proper divisors (17016899).

53157181 is a wasteful number, since it uses less digits than its factorization.

53157181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40644.

The product of its digits is 4200, while the sum is 31.

The square root of 53157181 is about 7290.8971327265. The cubic root of 53157181 is about 375.9995402326. Note that the first 3 decimals are identical.

The spelling of 53157181 in words is "fifty-three million, one hundred fifty-seven thousand, one hundred eighty-one".