53156478 has 16 divisors (see below), whose sum is σ = 109979280. Its totient is φ = 17107776.

The previous prime is 53156447. The next prime is 53156479. The reversal of 53156478 is 87465135.

It is a super-2 number, since 2×53156478² = 5651222306728968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53156479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152575 + ... + 152922.

It is an arithmetic number, because the mean of its divisors is an integer number (6873705).

Almost surely, 2^53156478 is an apocalyptic number.

53156478 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

53156478 is an abundant number, since it is smaller than the sum of its proper divisors (56822802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53156478 is a wasteful number, since it uses less digits than its factorization.

53156478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305531.

The product of its digits is 100800, while the sum is 39.

The square root of 53156478 is about 7290.8489217649. The cubic root of 53156478 is about 375.9978827027.

The spelling of 53156478 in words is "fifty-three million, one hundred fifty-six thousand, four hundred seventy-eight".