2551945537 has 16 divisors (see below), whose sum is σ = 2775507840. Its totient is φ = 2338098048.

The previous prime is 2551945523. The next prime is 2551945573. The reversal of 2551945537 is 7355491552.

It is a de Polignac number, because none of the positive numbers 2^k-2551945537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2551945507) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 106533 + ... + 128269.

It is an arithmetic number, because the mean of its divisors is an integer number (173469240).

Almost surely, 2^2551945537 is an apocalyptic number.

It is an amenable number.

2551945537 is a deficient number, since it is larger than the sum of its proper divisors (223562303).

2551945537 is a wasteful number, since it uses less digits than its factorization.

2551945537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21960.

The product of its digits is 945000, while the sum is 46.

The square root of 2551945537 is about 50516.7847056798. The cubic root of 2551945537 is about 1366.5445690313.

The spelling of 2551945537 in words is "two billion, five hundred fifty-one million, nine hundred forty-five thousand, five hundred thirty-seven".