53390557 has 16 divisors (see below), whose sum is σ = 62845632. Its totient is φ = 44811520.

The previous prime is 53390549. The next prime is 53390621. The reversal of 53390557 is 75509335.

It is a cyclic number.

It is not a de Polignac number, because 53390557 - 2³ = 53390549 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 (53390507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7218 + ... + 12604.

It is an arithmetic number, because the mean of its divisors is an integer number (3927852).

Almost surely, 2^53390557 is an apocalyptic number.

It is an amenable number.

53390557 is a deficient number, since it is larger than the sum of its proper divisors (9455075).

53390557 is a wasteful number, since it uses less digits than its factorization.

53390557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468.

The product of its (nonzero) digits is 70875, while the sum is 37.

The square root of 53390557 is about 7306.8842196931. The cubic root of 53390557 is about 376.5489872633.

The spelling of 53390557 in words is "fifty-three million, three hundred ninety thousand, five hundred fifty-seven".