52757557 has 4 divisors (see below), whose sum is σ = 52783360. Its totient is φ = 52731756.

The previous prime is 52757531. The next prime is 52757581. The reversal of 52757557 is 75575725.

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 not a de Polignac number, because 52757557 - 2⁷ = 52757429 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 (52757587) 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, 9543 + ... + 14020.

It is an arithmetic number, because the mean of its divisors is an integer number (13195840).

Almost surely, 2^52757557 is an apocalyptic number.

It is an amenable number.

52757557 is a deficient number, since it is larger than the sum of its proper divisors (25803).

52757557 is a wasteful number, since it uses less digits than its factorization.

52757557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25802.

The product of its digits is 428750, while the sum is 43.

The square root of 52757557 is about 7263.4397498706. The cubic root of 52757557 is about 375.0549418759.

The spelling of 52757557 in words is "fifty-two million, seven hundred fifty-seven thousand, five hundred fifty-seven".