56491499 has 2 divisors, whose sum is σ = 56491500. Its totient is φ = 56491498.

The previous prime is 56491471. The next prime is 56491531. The reversal of 56491499 is 99419465.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56491499 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56494499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28245749 + 28245750.

It is an arithmetic number, because the mean of its divisors is an integer number (28245750).

Almost surely, 2^56491499 is an apocalyptic number.

56491499 is a deficient number, since it is larger than the sum of its proper divisors (1).

56491499 is an equidigital number, since it uses as much as digits as its factorization.

56491499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 47.

The square root of 56491499 is about 7516.0826898059. The cubic root of 56491499 is about 383.7022680396.

The spelling of 56491499 in words is "fifty-six million, four hundred ninety-one thousand, four hundred ninety-nine".