2551130642 has 8 divisors (see below), whose sum is σ = 3829079100. Its totient is φ = 1274770944.

The previous prime is 2551130641. The next prime is 2551130651. The reversal of 2551130642 is 2460311552.

It can be written as a sum of positive squares in 2 ways, for example, as 1647466921 + 903663721 = 40589^2 + 30061^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2551130641) 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, 393167 + ... + 399602.

Almost surely, 2^2551130642 is an apocalyptic number.

2551130642 is a deficient number, since it is larger than the sum of its proper divisors (1277948458).

2551130642 is a wasteful number, since it uses less digits than its factorization.

2551130642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794380.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2551130642 is about 50508.7184751306. The cubic root of 2551130642 is about 1366.3990971586.

The spelling of 2551130642 in words is "two billion, five hundred fifty-one million, one hundred thirty thousand, six hundred forty-two".