2492117521 has 2 divisors, whose sum is σ = 2492117522. Its totient is φ = 2492117520.

The previous prime is 2492117513. The next prime is 2492117561. The reversal of 2492117521 is 1257112942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2002115025 + 490002496 = 44745^2 + 22136^2 .

It is a cyclic number.

It is not a de Polignac number, because 2492117521 - 2³ = 2492117513 is a prime.

It is not a weakly prime, because it can be changed into another prime (2492117561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1246058760 + 1246058761.

It is an arithmetic number, because the mean of its divisors is an integer number (1246058761).

Almost surely, 2^2492117521 is an apocalyptic number.

It is an amenable number.

2492117521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2492117521 is an equidigital number, since it uses as much as digits as its factorization.

2492117521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 34.

The square root of 2492117521 is about 49921.1129783782. The cubic root of 2492117521 is about 1355.7808838423.

The spelling of 2492117521 in words is "two billion, four hundred ninety-two million, one hundred seventeen thousand, five hundred twenty-one".