52740557 has 2 divisors, whose sum is σ = 52740558. Its totient is φ = 52740556.

The previous prime is 52740553. The next prime is 52740559. The reversal of 52740557 is 75504725.

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., 28079401 + 24661156 = 5299^2 + 4966^2 .

It is a cyclic number.

It is not a de Polignac number, because 52740557 - 2² = 52740553 is a prime.

Together with 52740559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52740551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26370278 + 26370279.

It is an arithmetic number, because the mean of its divisors is an integer number (26370279).

Almost surely, 2^52740557 is an apocalyptic number.

It is an amenable number.

52740557 is a deficient number, since it is larger than the sum of its proper divisors (1).

52740557 is an equidigital number, since it uses as much as digits as its factorization.

52740557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49000, while the sum is 35.

The square root of 52740557 is about 7262.2694111414. The cubic root of 52740557 is about 375.0146530571.

The spelling of 52740557 in words is "fifty-two million, seven hundred forty thousand, five hundred fifty-seven".