2551020045 has 32 divisors (see below), whose sum is σ = 4867540992. Its totient is φ = 1115476032.

The previous prime is 2551020007. The next prime is 2551020053. The reversal of 2551020045 is 5400201552.

It is a happy number.

It is not a de Polignac number, because 2551020045 - 2⁹ = 2551019533 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2551019997 and 2551020024.

It is a congruent 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, 525747 + ... + 530576.

It is an arithmetic number, because the mean of its divisors is an integer number (152110656).

Almost surely, 2^2551020045 is an apocalyptic number.

It is an amenable number.

2551020045 is a deficient number, since it is larger than the sum of its proper divisors (2316520947).

2551020045 is a wasteful number, since it uses less digits than its factorization.

2551020045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056361.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 2551020045 is about 50507.6236324775. The cubic root of 2551020045 is about 1366.3793514267.

Adding to 2551020045 its reverse (5400201552), we get a palindrome (7951221597).

The spelling of 2551020045 in words is "two billion, five hundred fifty-one million, twenty thousand, forty-five".