52688557 has 8 divisors (see below), whose sum is σ = 53543672. Its totient is φ = 51840000.

The previous prime is 52688543. The next prime is 52688591. The reversal of 52688557 is 75588625.

It can be written as a sum of positive squares in 4 ways, for example, as 111556 + 52577001 = 334^2 + 7251^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52688557 - 2⁷ = 52688429 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 (52688507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16057 + ... + 19057.

It is an arithmetic number, because the mean of its divisors is an integer number (6692959).

Almost surely, 2^52688557 is an apocalyptic number.

It is an amenable number.

52688557 is a deficient number, since it is larger than the sum of its proper divisors (855115).

52688557 is a wasteful number, since it uses less digits than its factorization.

52688557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279.

The product of its digits is 672000, while the sum is 46.

The square root of 52688557 is about 7258.6883801414. The cubic root of 52688557 is about 374.8913629014.

The spelling of 52688557 in words is "fifty-two million, six hundred eighty-eight thousand, five hundred fifty-seven".