52140457 has 2 divisors, whose sum is σ = 52140458. Its totient is φ = 52140456.

The previous prime is 52140409. The next prime is 52140461. The reversal of 52140457 is 75404125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51108201 + 1032256 = 7149^2 + 1016^2 .

It is a cyclic number.

It is not a de Polignac number, because 52140457 - 2⁷ = 52140329 is a prime.

It is not a weakly prime, because it can be changed into another prime (52140497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26070228 + 26070229.

It is an arithmetic number, because the mean of its divisors is an integer number (26070229).

Almost surely, 2^52140457 is an apocalyptic number.

It is an amenable number.

52140457 is a deficient number, since it is larger than the sum of its proper divisors (1).

52140457 is an equidigital number, since it uses as much as digits as its factorization.

52140457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 52140457 is about 7220.8349240237. The cubic root of 52140457 is about 373.5868759404.

The spelling of 52140457 in words is "fifty-two million, one hundred forty thousand, four hundred fifty-seven".