52642757 has 2 divisors, whose sum is σ = 52642758. Its totient is φ = 52642756.

The previous prime is 52642703. The next prime is 52642763. The reversal of 52642757 is 75724625.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45508516 + 7134241 = 6746^2 + 2671^2 .

It is a cyclic number.

It is not a de Polignac number, because 52642757 - 2²⁰ = 51594181 is a prime.

It is a super-2 number, since 2×52642757² = 5542519729122098, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52642757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52642357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26321378 + 26321379.

It is an arithmetic number, because the mean of its divisors is an integer number (26321379).

Almost surely, 2^52642757 is an apocalyptic number.

It is an amenable number.

52642757 is a deficient number, since it is larger than the sum of its proper divisors (1).

52642757 is an equidigital number, since it uses as much as digits as its factorization.

52642757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 38.

The square root of 52642757 is about 7255.5328543119. The cubic root of 52642757 is about 374.7827055200.

The spelling of 52642757 in words is "fifty-two million, six hundred forty-two thousand, seven hundred fifty-seven".