521492963 has 2 divisors, whose sum is σ = 521492964. Its totient is φ = 521492962.

The previous prime is 521492953. The next prime is 521492971. The reversal of 521492963 is 369294125.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-521492963 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 521492963.

It is not a weakly prime, because it can be changed into another prime (521492903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260746481 + 260746482.

It is an arithmetic number, because the mean of its divisors is an integer number (260746482).

Almost surely, 2^521492963 is an apocalyptic number.

521492963 is a deficient number, since it is larger than the sum of its proper divisors (1).

521492963 is an equidigital number, since it uses as much as digits as its factorization.

521492963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 41.

The square root of 521492963 is about 22836.2204184493. The cubic root of 521492963 is about 804.9140054481.

The spelling of 521492963 in words is "five hundred twenty-one million, four hundred ninety-two thousand, nine hundred sixty-three".