52590721 has 2 divisors, whose sum is σ = 52590722. Its totient is φ = 52590720.

The previous prime is 52590701. The next prime is 52590731. The reversal of 52590721 is 12709525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49914225 + 2676496 = 7065^2 + 1636^2 .

It is a cyclic number.

It is not a de Polignac number, because 52590721 - 2¹¹ = 52588673 is a prime.

It is not a weakly prime, because it can be changed into another prime (52590701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26295360 + 26295361.

It is an arithmetic number, because the mean of its divisors is an integer number (26295361).

Almost surely, 2^52590721 is an apocalyptic number.

It is an amenable number.

52590721 is a deficient number, since it is larger than the sum of its proper divisors (1).

52590721 is an equidigital number, since it uses as much as digits as its factorization.

52590721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 52590721 is about 7251.9460146915. The cubic root of 52590721 is about 374.6591771481.

The spelling of 52590721 in words is "fifty-two million, five hundred ninety thousand, seven hundred twenty-one".