51112005 has 16 divisors (see below), whose sum is σ = 93462144. Its totient is φ = 23365440.

The previous prime is 51111989. The next prime is 51112043. The reversal of 51112005 is 50021115.

It is not a de Polignac number, because 51112005 - 2⁴ = 51111989 is a prime.

It is a super-2 number, since 2×51112005² = 5224874110240050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243286 + ... + 243495.

It is an arithmetic number, because the mean of its divisors is an integer number (5841384).

Almost surely, 2^51112005 is an apocalyptic number.

It is an amenable number.

51112005 is a deficient number, since it is larger than the sum of its proper divisors (42350139).

51112005 is a wasteful number, since it uses less digits than its factorization.

51112005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486796.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 51112005 is about 7149.2660462456. The cubic root of 51112005 is about 371.1142573036.

The spelling of 51112005 in words is "fifty-one million, one hundred twelve thousand, five".