2515853491 has 2 divisors, whose sum is σ = 2515853492. Its totient is φ = 2515853490.

The previous prime is 2515853447. The next prime is 2515853519. The reversal of 2515853491 is 1943585152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2515853491 is a prime.

It is not a weakly prime, because it can be changed into another prime (2515803491) 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, 1257926745 + 1257926746.

It is an arithmetic number, because the mean of its divisors is an integer number (1257926746).

Almost surely, 2^2515853491 is an apocalyptic number.

2515853491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2515853491 is an equidigital number, since it uses as much as digits as its factorization.

2515853491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216000, while the sum is 43.

The square root of 2515853491 is about 50158.2843705803. The cubic root of 2515853491 is about 1360.0716317158.

The spelling of 2515853491 in words is "two billion, five hundred fifteen million, eight hundred fifty-three thousand, four hundred ninety-one".