51173115 has 16 divisors (see below), whose sum is σ = 93573888. Its totient is φ = 23393376.

The previous prime is 51173063. The next prime is 51173117. The reversal of 51173115 is 51137115.

It is not a de Polignac number, because 51173115 - 2⁷ = 51172987 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (51173117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243577 + ... + 243786.

It is an arithmetic number, because the mean of its divisors is an integer number (5848368).

Almost surely, 2^51173115 is an apocalyptic number.

51173115 is a deficient number, since it is larger than the sum of its proper divisors (42400773).

51173115 is a wasteful number, since it uses less digits than its factorization.

51173115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487378.

The product of its digits is 525, while the sum is 24.

The square root of 51173115 is about 7153.5386348296. The cubic root of 51173115 is about 371.2621009784.

It can be divided in two parts, 51 and 173115, that added together give a triangular number (173166 = T₅₈₈).

The spelling of 51173115 in words is "fifty-one million, one hundred seventy-three thousand, one hundred fifteen".