2051315555 has 32 divisors (see below), whose sum is σ = 2539555200. Its totient is φ = 1590220800.

The previous prime is 2051315537. The next prime is 2051315573. The reversal of 2051315555 is 5555131502.

It is an interprime number because it is at equal distance from previous prime (2051315537) and next prime (2051315573).

It is not a de Polignac number, because 2051315555 - 2⁶ = 2051315491 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5877521 + ... + 5877869.

It is an arithmetic number, because the mean of its divisors is an integer number (79361100).

Almost surely, 2^2051315555 is an apocalyptic number.

2051315555 is a deficient number, since it is larger than the sum of its proper divisors (488239645).

2051315555 is a wasteful number, since it uses less digits than its factorization.

2051315555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 2051315555 is about 45291.4512353049. The cubic root of 2051315555 is about 1270.6057735867.

The spelling of 2051315555 in words is "two billion, fifty-one million, three hundred fifteen thousand, five hundred fifty-five".