53157711 has 4 divisors (see below), whose sum is σ = 70876952. Its totient is φ = 35438472.

The previous prime is 53157703. The next prime is 53157721. The reversal of 53157711 is 11775135.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 53157711 - 2³ = 53157703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53157701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8859616 + ... + 8859621.

It is an arithmetic number, because the mean of its divisors is an integer number (17719238).

Almost surely, 2^53157711 is an apocalyptic number.

53157711 is a deficient number, since it is larger than the sum of its proper divisors (17719241).

53157711 is a wasteful number, since it uses less digits than its factorization.

53157711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17719240.

The product of its digits is 3675, while the sum is 30.

The square root of 53157711 is about 7290.9334793290. The cubic root of 53157711 is about 376.0007898542. Note that the first 3 decimals are identical.

The spelling of 53157711 in words is "fifty-three million, one hundred fifty-seven thousand, seven hundred eleven".