5100555561 has 8 divisors (see below), whose sum is σ = 6984544704. Its totient is φ = 3308468400.

The previous prime is 5100555547. The next prime is 5100555563. The reversal of 5100555561 is 1655550015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5100555561 - 2⁶ = 5100555497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5100555563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22975365 + ... + 22975586.

It is an arithmetic number, because the mean of its divisors is an integer number (873068088).

Almost surely, 2^5100555561 is an apocalyptic number.

It is an amenable number.

5100555561 is a deficient number, since it is larger than the sum of its proper divisors (1883989143).

5100555561 is a wasteful number, since it uses less digits than its factorization.

5100555561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45950991.

The product of its (nonzero) digits is 18750, while the sum is 33.

The square root of 5100555561 is about 71418.1738845233. The cubic root of 5100555561 is about 1721.3631209075.

The spelling of 5100555561 in words is "five billion, one hundred million, five hundred fifty-five thousand, five hundred sixty-one".