52917989 has 2 divisors, whose sum is σ = 52917990. Its totient is φ = 52917988.

The previous prime is 52917973. The next prime is 52918043. The reversal of 52917989 is 98971925.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51595489 + 1322500 = 7183^2 + 1150^2 .

It is a cyclic number.

It is not a de Polignac number, because 52917989 - 2⁴ = 52917973 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52917929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26458994 + 26458995.

It is an arithmetic number, because the mean of its divisors is an integer number (26458995).

Almost surely, 2^52917989 is an apocalyptic number.

It is an amenable number.

52917989 is a deficient number, since it is larger than the sum of its proper divisors (1).

52917989 is an equidigital number, since it uses as much as digits as its factorization.

52917989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 50.

The square root of 52917989 is about 7274.4751700724. The cubic root of 52917989 is about 375.4347290189.

The spelling of 52917989 in words is "fifty-two million, nine hundred seventeen thousand, nine hundred eighty-nine".