51160999 has 4 divisors (see below), whose sum is σ = 51924664. Its totient is φ = 50397336.

The previous prime is 51160997. The next prime is 51161021. The reversal of 51160999 is 99906115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99906115 = 5 ⋅19981223.

It is a cyclic number.

It is not a de Polignac number, because 51160999 - 2¹ = 51160997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51160997) 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, 381732 + ... + 381865.

It is an arithmetic number, because the mean of its divisors is an integer number (12981166).

Almost surely, 2^51160999 is an apocalyptic number.

51160999 is a deficient number, since it is larger than the sum of its proper divisors (763665).

51160999 is an equidigital number, since it uses as much as digits as its factorization.

51160999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763664.

The product of its (nonzero) digits is 21870, while the sum is 40.

The square root of 51160999 is about 7152.6917310898. The cubic root of 51160999 is about 371.2327980481.

The spelling of 51160999 in words is "fifty-one million, one hundred sixty thousand, nine hundred ninety-nine".