51951115 has 8 divisors (see below), whose sum is σ = 62381088. Its totient is φ = 41534400.

The previous prime is 51951113. The next prime is 51951157. The reversal of 51951115 is 51115915.

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

It is not a de Polignac number, because 51951115 - 2¹ = 51951113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51951113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10719 + ... + 14791.

It is an arithmetic number, because the mean of its divisors is an integer number (7797636).

Almost surely, 2^51951115 is an apocalyptic number.

51951115 is a deficient number, since it is larger than the sum of its proper divisors (10429973).

51951115 is a wasteful number, since it uses less digits than its factorization.

51951115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6629.

The product of its digits is 1125, while the sum is 28.

The square root of 51951115 is about 7207.7121890375. The cubic root of 51951115 is about 373.1341150307.

The spelling of 51951115 in words is "fifty-one million, nine hundred fifty-one thousand, one hundred fifteen".