2515788551 has 4 divisors (see below), whose sum is σ = 2516547600. Its totient is φ = 2515029504.

The previous prime is 2515788533. The next prime is 2515788607. The reversal of 2515788551 is 1558875152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2515788551 - 2¹⁸ = 2515526407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2515788496 and 2515788505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2515788521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374531 + ... + 381188.

It is an arithmetic number, because the mean of its divisors is an integer number (629136900).

Almost surely, 2^2515788551 is an apocalyptic number.

2515788551 is a deficient number, since it is larger than the sum of its proper divisors (759049).

2515788551 is an equidigital number, since it uses as much as digits as its factorization.

2515788551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759048.

The product of its digits is 560000, while the sum is 47.

The square root of 2515788551 is about 50157.6370157128. The cubic root of 2515788551 is about 1360.0599294165.

The spelling of 2515788551 in words is "two billion, five hundred fifteen million, seven hundred eighty-eight thousand, five hundred fifty-one".