2551351540 has 48 divisors (see below), whose sum is σ = 5644235520. Its totient is φ = 966072960.

The previous prime is 2551351513. The next prime is 2551351547. The reversal of 2551351540 is 451531552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551351547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 842469 + ... + 845491.

It is an arithmetic number, because the mean of its divisors is an integer number (117588240).

Almost surely, 2^2551351540 is an apocalyptic number.

2551351540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2551351540 is an abundant number, since it is smaller than the sum of its proper divisors (3092883980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2551351540 is a wasteful number, since it uses less digits than its factorization.

2551351540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5272 (or 5270 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 2551351540 is about 50510.9051591832. The cubic root of 2551351540 is about 1366.4385340670.

The spelling of 2551351540 in words is "two billion, five hundred fifty-one million, three hundred fifty-one thousand, five hundred forty".