53971155 has 48 divisors (see below), whose sum is σ = 110383104. Its totient is φ = 23872320.

The previous prime is 53971139. The next prime is 53971189. The reversal of 53971155 is 55117935.

53971155 is a `hidden beast` number, since 539 + 7 + 115 + 5 = 666.

It is not a de Polignac number, because 53971155 - 2⁴ = 53971139 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7002 + ... + 12528.

It is an arithmetic number, because the mean of its divisors is an integer number (2299648).

Almost surely, 2^53971155 is an apocalyptic number.

53971155 is an abundant number, since it is smaller than the sum of its proper divisors (56411949).

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

53971155 is a wasteful number, since it uses less digits than its factorization.

53971155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5576 (or 5573 counting only the distinct ones).

The product of its digits is 23625, while the sum is 36.

The square root of 53971155 is about 7346.5063125271. The cubic root of 53971155 is about 377.9090021989.

The spelling of 53971155 in words is "fifty-three million, nine hundred seventy-one thousand, one hundred fifty-five".