51010555507 has 4 divisors (see below), whose sum is σ = 51143742720. Its totient is φ = 50877368296.

The previous prime is 51010555499. The next prime is 51010555511. The reversal of 51010555507 is 70555501015.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51010555507 - 2³ = 51010555499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51010555537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66593032 + ... + 66593797.

It is an arithmetic number, because the mean of its divisors is an integer number (12785935680).

Almost surely, 2^51010555507 is an apocalyptic number.

51010555507 is a deficient number, since it is larger than the sum of its proper divisors (133187213).

51010555507 is a wasteful number, since it uses less digits than its factorization.

51010555507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133187212.

The product of its (nonzero) digits is 21875, while the sum is 34.

The spelling of 51010555507 in words is "fifty-one billion, ten million, five hundred fifty-five thousand, five hundred seven".