53156331 has 20 divisors (see below), whose sum is σ = 84079512. Its totient is φ = 33352128.

The previous prime is 53156321. The next prime is 53156339. The reversal of 53156331 is 13365135.

It is not a de Polignac number, because 53156331 - 2¹⁰ = 53155307 is a prime.

It is a super-2 number, since 2×53156331² = 5651191050763122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 53156295 and 53156304.

It is not an unprimeable number, because it can be changed into a prime (53156339) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17925 + ... + 20678.

Almost surely, 2^53156331 is an apocalyptic number.

53156331 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

53156331 is a deficient number, since it is larger than the sum of its proper divisors (30923181).

53156331 is a wasteful number, since it uses less digits than its factorization.

53156331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38632 (or 38623 counting only the distinct ones).

The product of its digits is 4050, while the sum is 27.

The square root of 53156331 is about 7290.8388406273. The cubic root of 53156331 is about 375.9975361050.

The spelling of 53156331 in words is "fifty-three million, one hundred fifty-six thousand, three hundred thirty-one".