2551023494 has 4 divisors (see below), whose sum is σ = 3826535244. Its totient is φ = 1275511746.

The previous prime is 2551023463. The next prime is 2551023521. The reversal of 2551023494 is 4943201552.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637755872 + ... + 637755875.

It is an arithmetic number, because the mean of its divisors is an integer number (956633811).

Almost surely, 2^2551023494 is an apocalyptic number.

2551023494 is a deficient number, since it is larger than the sum of its proper divisors (1275511750).

2551023494 is a wasteful number, since it uses less digits than its factorization.

2551023494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275511749.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 2551023494 is about 50507.6577758264. The cubic root of 2551023494 is about 1366.3799672118.

The spelling of 2551023494 in words is "two billion, five hundred fifty-one million, twenty-three thousand, four hundred ninety-four".