52564997 has 2 divisors, whose sum is σ = 52564998. Its totient is φ = 52564996.

The previous prime is 52564973. The next prime is 52564999. The reversal of 52564997 is 79946525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48011041 + 4553956 = 6929^2 + 2134^2 .

It is a cyclic number.

It is not a de Polignac number, because 52564997 - 2⁸ = 52564741 is a prime.

It is a super-2 number, since 2×52564997² = 5526157819220018, which contains 22 as substring.

Together with 52564999, 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 (52564999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26282498 + 26282499.

It is an arithmetic number, because the mean of its divisors is an integer number (26282499).

Almost surely, 2^52564997 is an apocalyptic number.

It is an amenable number.

52564997 is a deficient number, since it is larger than the sum of its proper divisors (1).

52564997 is an equidigital number, since it uses as much as digits as its factorization.

52564997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 47.

The square root of 52564997 is about 7250.1722048514. The cubic root of 52564997 is about 374.5980807905.

The spelling of 52564997 in words is "fifty-two million, five hundred sixty-four thousand, nine hundred ninety-seven".