51238227 has 16 divisors (see below), whose sum is σ = 72638208. Its totient is φ = 32054880.

The previous prime is 51238223. The next prime is 51238237. The reversal of 51238227 is 72283215.

It is not a de Polignac number, because 51238227 - 2² = 51238223 is a prime.

It is a super-2 number, since 2×51238227² = 5250711812207058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51238194 and 51238203.

It is not an unprimeable number, because it can be changed into a prime (51238223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3349 + ... + 10662.

It is an arithmetic number, because the mean of its divisors is an integer number (4539888).

Almost surely, 2^51238227 is an apocalyptic number.

51238227 is a deficient number, since it is larger than the sum of its proper divisors (21399981).

51238227 is a wasteful number, since it uses less digits than its factorization.

51238227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14090.

The product of its digits is 6720, while the sum is 30.

The square root of 51238227 is about 7158.0882224236. The cubic root of 51238227 is about 371.4194972494.

The spelling of 51238227 in words is "fifty-one million, two hundred thirty-eight thousand, two hundred twenty-seven".