651560131 has 2 divisors, whose sum is σ = 651560132. Its totient is φ = 651560130.

The previous prime is 651560101. The next prime is 651560149. The reversal of 651560131 is 131065156.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-651560131 is a prime.

It is a super-2 number, since 2×651560131² = 849061208617474322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 651560131.

It is not a weakly prime, because it can be changed into another prime (651560101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325780065 + 325780066.

It is an arithmetic number, because the mean of its divisors is an integer number (325780066).

Almost surely, 2^651560131 is an apocalyptic number.

651560131 is a deficient number, since it is larger than the sum of its proper divisors (1).

651560131 is an equidigital number, since it uses as much as digits as its factorization.

651560131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 651560131 is about 25525.6759166138. The cubic root of 651560131 is about 866.9316010707.

The spelling of 651560131 in words is "six hundred fifty-one million, five hundred sixty thousand, one hundred thirty-one".