51160305 has 32 divisors (see below), whose sum is σ = 94076928. Its totient is φ = 23256000.

The previous prime is 51160301. The next prime is 51160387. The reversal of 51160305 is 50306115.

It is a happy number.

It is not a de Polignac number, because 51160305 - 2² = 51160301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51160301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18780 + ... + 21330.

It is an arithmetic number, because the mean of its divisors is an integer number (2939904).

Almost surely, 2^51160305 is an apocalyptic number.

It is an amenable number.

51160305 is a deficient number, since it is larger than the sum of its proper divisors (42916623).

51160305 is a wasteful number, since it uses less digits than its factorization.

51160305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 51160305 is about 7152.6432177203. The cubic root of 51160305 is about 371.2311194470.

The spelling of 51160305 in words is "fifty-one million, one hundred sixty thousand, three hundred five".