51160901 has 32 divisors (see below), whose sum is σ = 63590400. Its totient is φ = 40582080.

The previous prime is 51160897. The next prime is 51160903. The reversal of 51160901 is 10906115.

It is not a de Polignac number, because 51160901 - 2² = 51160897 is a prime.

It is a super-2 number, since 2×51160901² = 5234875582263602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51160903) 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, 139220 + ... + 139586.

It is an arithmetic number, because the mean of its divisors is an integer number (1987200).

Almost surely, 2^51160901 is an apocalyptic number.

It is an amenable number.

51160901 is a deficient number, since it is larger than the sum of its proper divisors (12429499).

51160901 is a wasteful number, since it uses less digits than its factorization.

51160901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 51160901 is about 7152.6848805186. The cubic root of 51160901 is about 371.2325610132.

The spelling of 51160901 in words is "fifty-one million, one hundred sixty thousand, nine hundred one".