652490491 has 2 divisors, whose sum is σ = 652490492. Its totient is φ = 652490490.

The previous prime is 652490437. The next prime is 652490507. The reversal of 652490491 is 194094256.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652490491 is a prime.

It is a super-3 number, since 3×652490491³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (652490291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326245245 + 326245246.

It is an arithmetic number, because the mean of its divisors is an integer number (326245246).

Almost surely, 2^652490491 is an apocalyptic number.

652490491 is a deficient number, since it is larger than the sum of its proper divisors (1).

652490491 is an equidigital number, since it uses as much as digits as its factorization.

652490491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 652490491 is about 25543.8934189759. The cubic root of 652490491 is about 867.3440341711.

The spelling of 652490491 in words is "six hundred fifty-two million, four hundred ninety thousand, four hundred ninety-one".