52318557 has 6 divisors (see below), whose sum is σ = 75571262. Its totient is φ = 34879032.

The previous prime is 52318549. The next prime is 52318621. The reversal of 52318557 is 75581325.

52318557 is a `hidden beast` number, since 523 + 1 + 85 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 50041476 + 2277081 = 7074^2 + 1509^2 .

It is not a de Polignac number, because 52318557 - 2³ = 52318549 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 (52318507) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2906578 + ... + 2906595.

Almost surely, 2^52318557 is an apocalyptic number.

It is an amenable number.

52318557 is a deficient number, since it is larger than the sum of its proper divisors (23252705).

52318557 is a wasteful number, since it uses less digits than its factorization.

52318557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5813179 (or 5813176 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 52318557 is about 7233.1567797194. The cubic root of 52318557 is about 374.0117552808.

The spelling of 52318557 in words is "fifty-two million, three hundred eighteen thousand, five hundred fifty-seven".