52920457 has 4 divisors (see below), whose sum is σ = 52936576. Its totient is φ = 52904340.

The previous prime is 52920451. The next prime is 52920509. The reversal of 52920457 is 75402925.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52920457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52920451) 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, 1173 + ... + 10354.

It is an arithmetic number, because the mean of its divisors is an integer number (13234144).

Almost surely, 2^52920457 is an apocalyptic number.

It is an amenable number.

52920457 is a deficient number, since it is larger than the sum of its proper divisors (16119).

52920457 is a wasteful number, since it uses less digits than its factorization.

52920457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16118.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 52920457 is about 7274.6448023254. The cubic root of 52920457 is about 375.4405654621.

The spelling of 52920457 in words is "fifty-two million, nine hundred twenty thousand, four hundred fifty-seven".