52390691 has 2 divisors, whose sum is σ = 52390692. Its totient is φ = 52390690.

The previous prime is 52390673. The next prime is 52390693. The reversal of 52390691 is 19609325.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52390691 - 2⁶ = 52390627 is a prime.

Together with 52390693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52390693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26195345 + 26195346.

It is an arithmetic number, because the mean of its divisors is an integer number (26195346).

Almost surely, 2^52390691 is an apocalyptic number.

52390691 is a deficient number, since it is larger than the sum of its proper divisors (1).

52390691 is an equidigital number, since it uses as much as digits as its factorization.

52390691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 52390691 is about 7238.1414050846. The cubic root of 52390691 is about 374.1835654118.

The spelling of 52390691 in words is "fifty-two million, three hundred ninety thousand, six hundred ninety-one".