53557 has 6 divisors (see below), whose sum is σ = 62358. Its totient is φ = 45864.

The previous prime is 53551. The next prime is 53569. The reversal of 53557 is 75535.

It is a happy number.

53557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 53361 + 196 = 231^2 + 14^2 .

It is not a de Polignac number, because 53557 - 2³ = 53549 is a prime.

It is a Duffinian number.

53557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53551) 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, 498 + ... + 595.

It is an arithmetic number, because the mean of its divisors is an integer number (10393).

2⁵³⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

53557 is a deficient number, since it is larger than the sum of its proper divisors (8801).

53557 is a wasteful number, since it uses less digits than its factorization.

53557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107 (or 1100 counting only the distinct ones).

The product of its digits is 2625, while the sum is 25.

The square root of 53557 is about 231.4238535674. The cubic root of 53557 is about 37.6939873663.

The spelling of 53557 in words is "fifty-three thousand, five hundred fifty-seven".