51189115 has 8 divisors (see below), whose sum is σ = 62925408. Its totient is φ = 39952320.

The previous prime is 51189109. The next prime is 51189137. The reversal of 51189115 is 51198115.

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

It is not a de Polignac number, because 51189115 - 2³ = 51189107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124647 + ... + 125056.

It is an arithmetic number, because the mean of its divisors is an integer number (7865676).

Almost surely, 2^51189115 is an apocalyptic number.

51189115 is a deficient number, since it is larger than the sum of its proper divisors (11736293).

51189115 is a wasteful number, since it uses less digits than its factorization.

51189115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249749.

The product of its digits is 1800, while the sum is 31.

The square root of 51189115 is about 7154.6568750709. The cubic root of 51189115 is about 371.3007903998.

The spelling of 51189115 in words is "fifty-one million, one hundred eighty-nine thousand, one hundred fifteen".