52002991 has 2 divisors, whose sum is σ = 52002992. Its totient is φ = 52002990.

The previous prime is 52002971. The next prime is 52003067. The reversal of 52002991 is 19920025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52002991 - 2⁵ = 52002959 is a prime.

It is a super-2 number, since 2×52002991² = 5408622145892162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52002941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26001495 + 26001496.

It is an arithmetic number, because the mean of its divisors is an integer number (26001496).

Almost surely, 2^52002991 is an apocalyptic number.

52002991 is a deficient number, since it is larger than the sum of its proper divisors (1).

52002991 is an equidigital number, since it uses as much as digits as its factorization.

52002991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 52002991 is about 7211.3099364817. The cubic root of 52002991 is about 373.2582719169.

The spelling of 52002991 in words is "fifty-two million, two thousand, nine hundred ninety-one".