2515400647 has 2 divisors, whose sum is σ = 2515400648. Its totient is φ = 2515400646.

The previous prime is 2515400623. The next prime is 2515400651. The reversal of 2515400647 is 7460045152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2515400647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2515409647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257700323 + 1257700324.

It is an arithmetic number, because the mean of its divisors is an integer number (1257700324).

Almost surely, 2^2515400647 is an apocalyptic number.

2515400647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2515400647 is an equidigital number, since it uses as much as digits as its factorization.

2515400647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 2515400647 is about 50153.7700178162. The cubic root of 2515400647 is about 1359.9900242564.

Adding to 2515400647 its reverse (7460045152), we get a palindrome (9975445799).

The spelling of 2515400647 in words is "two billion, five hundred fifteen million, four hundred thousand, six hundred forty-seven".