652400291 has 2 divisors, whose sum is σ = 652400292. Its totient is φ = 652400290.

The previous prime is 652400263. The next prime is 652400299. The reversal of 652400291 is 192004256.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652400291 is a prime.

It is a super-2 number, since 2×652400291² = 851252279393769362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (652400299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326200145 + 326200146.

It is an arithmetic number, because the mean of its divisors is an integer number (326200146).

Almost surely, 2^652400291 is an apocalyptic number.

652400291 is a deficient number, since it is larger than the sum of its proper divisors (1).

652400291 is an equidigital number, since it uses as much as digits as its factorization.

652400291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 652400291 is about 25542.1277696280. The cubic root of 652400291 is about 867.3040652427.

The spelling of 652400291 in words is "six hundred fifty-two million, four hundred thousand, two hundred ninety-one".