652140491 has 2 divisors, whose sum is σ = 652140492. Its totient is φ = 652140490.

The previous prime is 652140481. The next prime is 652140527. The reversal of 652140491 is 194041256.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652140491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (652140431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326070245 + 326070246.

It is an arithmetic number, because the mean of its divisors is an integer number (326070246).

Almost surely, 2^652140491 is an apocalyptic number.

652140491 is a deficient number, since it is larger than the sum of its proper divisors (1).

652140491 is an equidigital number, since it uses as much as digits as its factorization.

652140491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 652140491 is about 25537.0415475246. The cubic root of 652140491 is about 867.1889235034.

The spelling of 652140491 in words is "six hundred fifty-two million, one hundred forty thousand, four hundred ninety-one".