2551157615 has 12 divisors (see below), whose sum is σ = 3252065736. Its totient is φ = 1920870528.

The previous prime is 2551157599. The next prime is 2551157633. The reversal of 2551157615 is 5167511552.

It is a happy number.

It is not a de Polignac number, because 2551157615 - 2⁴ = 2551157599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 881309 + ... + 884198.

It is an arithmetic number, because the mean of its divisors is an integer number (271005478).

Almost surely, 2^2551157615 is an apocalyptic number.

2551157615 is a deficient number, since it is larger than the sum of its proper divisors (700908121).

2551157615 is a wasteful number, since it uses less digits than its factorization.

2551157615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765546 (or 1765529 counting only the distinct ones).

The product of its digits is 52500, while the sum is 38.

The square root of 2551157615 is about 50508.9854877328. The cubic root of 2551157615 is about 1366.4039127689.

The spelling of 2551157615 in words is "two billion, five hundred fifty-one million, one hundred fifty-seven thousand, six hundred fifteen".