51002512045 has 4 divisors (see below), whose sum is σ = 61203014460. Its totient is φ = 40802009632.

The previous prime is 51002512007. The next prime is 51002512087. The reversal of 51002512045 is 54021520015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27189701449 + 23812810596 = 164893^2 + 154314^2 .

It is a cyclic number.

It is not a de Polignac number, because 51002512045 - 2²⁷ = 50868294317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5100251200 + ... + 5100251209.

It is an arithmetic number, because the mean of its divisors is an integer number (15300753615).

Almost surely, 2^51002512045 is an apocalyptic number.

It is an amenable number.

51002512045 is a deficient number, since it is larger than the sum of its proper divisors (10200502415).

51002512045 is a wasteful number, since it uses less digits than its factorization.

51002512045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10200502414.

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 51002512045 in words is "fifty-one billion, two million, five hundred twelve thousand, forty-five".