53123279 has 4 divisors (see below), whose sum is σ = 57952680. Its totient is φ = 48293880.

The previous prime is 53123269. The next prime is 53123281. The reversal of 53123279 is 97232135.

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

It is a cyclic number.

It is not a de Polignac number, because 53123279 - 2⁴ = 53123263 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 (53123219) 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, 2414684 + ... + 2414705.

It is an arithmetic number, because the mean of its divisors is an integer number (14488170).

Almost surely, 2^53123279 is an apocalyptic number.

53123279 is a deficient number, since it is larger than the sum of its proper divisors (4829401).

53123279 is a wasteful number, since it uses less digits than its factorization.

53123279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4829400.

The product of its digits is 11340, while the sum is 32.

The square root of 53123279 is about 7288.5718079745. The cubic root of 53123279 is about 375.9195896217.

The spelling of 53123279 in words is "fifty-three million, one hundred twenty-three thousand, two hundred seventy-nine".