2551513555 has 8 divisors (see below), whose sum is σ = 3070642032. Its totient is φ = 2035327008.

The previous prime is 2551513537. The next prime is 2551513577. The reversal of 2551513555 is 5553151552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2551513555 - 2¹⁵ = 2551480787 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733572 + ... + 737041.

It is an arithmetic number, because the mean of its divisors is an integer number (383830254).

Almost surely, 2^2551513555 is an apocalyptic number.

2551513555 is a deficient number, since it is larger than the sum of its proper divisors (519128477).

2551513555 is a wasteful number, since it uses less digits than its factorization.

2551513555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470965.

The product of its digits is 93750, while the sum is 37.

The square root of 2551513555 is about 50512.5088963120. The cubic root of 2551513555 is about 1366.4674571495.

The spelling of 2551513555 in words is "two billion, five hundred fifty-one million, five hundred thirteen thousand, five hundred fifty-five".