53116257 has 4 divisors (see below), whose sum is σ = 70821680. Its totient is φ = 35410836.

The previous prime is 53116253. The next prime is 53116291. The reversal of 53116257 is 75261135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 53116257 - 2² = 53116253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53116253) 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, 8852707 + ... + 8852712.

It is an arithmetic number, because the mean of its divisors is an integer number (17705420).

Almost surely, 2^53116257 is an apocalyptic number.

It is an amenable number.

53116257 is a deficient number, since it is larger than the sum of its proper divisors (17705423).

53116257 is a wasteful number, since it uses less digits than its factorization.

53116257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17705422.

The product of its digits is 6300, while the sum is 30.

The square root of 53116257 is about 7288.0900790262. The cubic root of 53116257 is about 375.9030254856.

The spelling of 53116257 in words is "fifty-three million, one hundred sixteen thousand, two hundred fifty-seven".