2551051503 has 160 divisors (see below), whose sum is σ = 5198764032. Its totient is φ = 1203724800.

The previous prime is 2551051471. The next prime is 2551051619. The reversal of 2551051503 is 3051501552.

2551051503 is a `hidden beast` number, since 2 + 55 + 105 + 1 + 503 = 666.

It is not a de Polignac number, because 2551051503 - 2⁵ = 2551051471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551031503) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 5918698 + ... + 5919128.

Almost surely, 2^2551051503 is an apocalyptic number.

2551051503 is an abundant number, since it is smaller than the sum of its proper divisors (2647712529).

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

2551051503 is a wasteful number, since it uses less digits than its factorization.

2551051503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 2551051503 is about 50507.9350498513. The cubic root of 2551051503 is about 1366.3849679232.

The spelling of 2551051503 in words is "two billion, five hundred fifty-one million, fifty-one thousand, five hundred three".