51510099 has 4 divisors (see below), whose sum is σ = 68680136. Its totient is φ = 34340064.

The previous prime is 51510091. The next prime is 51510143. The reversal of 51510099 is 99001515.

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

It is not a de Polignac number, because 51510099 - 2³ = 51510091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51510091) 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, 8585014 + ... + 8585019.

It is an arithmetic number, because the mean of its divisors is an integer number (17170034).

Almost surely, 2^51510099 is an apocalyptic number.

51510099 is a deficient number, since it is larger than the sum of its proper divisors (17170037).

51510099 is a wasteful number, since it uses less digits than its factorization.

51510099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17170036.

The product of its (nonzero) digits is 2025, while the sum is 30.

The square root of 51510099 is about 7177.0536433832. The cubic root of 51510099 is about 372.0752608161.

The spelling of 51510099 in words is "fifty-one million, five hundred ten thousand, ninety-nine".