51431226 has 32 divisors (see below), whose sum is σ = 128245248. Its totient is φ = 13358640.

The previous prime is 51431213. The next prime is 51431249. The reversal of 51431226 is 62213415.

It is a junction number, because it is equal to n+sod(n) for n = 51431196 and 51431205.

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, 55200 + ... + 56123.

It is an arithmetic number, because the mean of its divisors is an integer number (4007664).

Almost surely, 2^51431226 is an apocalyptic number.

51431226 is an abundant number, since it is smaller than the sum of its proper divisors (76814022).

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

51431226 is a wasteful number, since it uses less digits than its factorization.

51431226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111346.

The product of its digits is 1440, while the sum is 24.

The square root of 51431226 is about 7171.5567347683. The cubic root of 51431226 is about 371.8852548169.

The spelling of 51431226 in words is "fifty-one million, four hundred thirty-one thousand, two hundred twenty-six".