51591126 has 16 divisors (see below), whose sum is σ = 103334400. Its totient is φ = 17171688.

The previous prime is 51591121. The next prime is 51591149. The reversal of 51591126 is 62119515.

It is a junction number, because it is equal to n+sod(n) for n = 51591093 and 51591102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51591121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1666 + ... + 10293.

It is an arithmetic number, because the mean of its divisors is an integer number (6458400).

Almost surely, 2^51591126 is an apocalyptic number.

51591126 is an abundant number, since it is smaller than the sum of its proper divisors (51743274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51591126 is a wasteful number, since it uses less digits than its factorization.

51591126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12683.

The product of its digits is 2700, while the sum is 30.

The square root of 51591126 is about 7182.6962903912. The cubic root of 51591126 is about 372.2702539570.

The spelling of 51591126 in words is "fifty-one million, five hundred ninety-one thousand, one hundred twenty-six".