5015555551 has 4 divisors (see below), whose sum is σ = 5028449400. Its totient is φ = 5002661704.

The previous prime is 5015555527. The next prime is 5015555563. The reversal of 5015555551 is 1555555105.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5015555551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5015555551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5015555521) 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, 6446341 + ... + 6447118.

It is an arithmetic number, because the mean of its divisors is an integer number (1257112350).

Almost surely, 2^5015555551 is an apocalyptic number.

5015555551 is a deficient number, since it is larger than the sum of its proper divisors (12893849).

5015555551 is a wasteful number, since it uses less digits than its factorization.

5015555551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12893848.

The product of its (nonzero) digits is 78125, while the sum is 37.

The square root of 5015555551 is about 70820.5870563073. The cubic root of 5015555551 is about 1711.7474187330.

The spelling of 5015555551 in words is "five billion, fifteen million, five hundred fifty-five thousand, five hundred fifty-one".