5161515550 has 24 divisors (see below), whose sum is σ = 9655928856. Its totient is φ = 2052668640.

The previous prime is 5161515539. The next prime is 5161515551. The reversal of 5161515550 is 555151615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5161515551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 289704 + ... + 307003.

It is an arithmetic number, because the mean of its divisors is an integer number (402330369).

Almost surely, 2^5161515550 is an apocalyptic number.

5161515550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5161515550 is a deficient number, since it is larger than the sum of its proper divisors (4494413306).

5161515550 is a wasteful number, since it uses less digits than its factorization.

5161515550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596892 (or 596887 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 34.

The square root of 5161515550 is about 71843.6883101084. The cubic root of 5161515550 is about 1728.1936830567.

The spelling of 5161515550 in words is "five billion, one hundred sixty-one million, five hundred fifteen thousand, five hundred fifty".