51104231 has 4 divisors (see below), whose sum is σ = 51751200. Its totient is φ = 50457264.

The previous prime is 51104219. The next prime is 51104239. The reversal of 51104231 is 13240115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51104231 is a prime.

It is a super-2 number, since 2×51104231² = 5223284852202722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51104239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323366 + ... + 323523.

It is an arithmetic number, because the mean of its divisors is an integer number (12937800).

Almost surely, 2^51104231 is an apocalyptic number.

51104231 is a deficient number, since it is larger than the sum of its proper divisors (646969).

51104231 is an equidigital number, since it uses as much as digits as its factorization.

51104231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646968.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 51104231 is about 7148.7223333964. The cubic root of 51104231 is about 371.0954411859.

Adding to 51104231 its reverse (13240115), we get a palindrome (64344346).

The spelling of 51104231 in words is "fifty-one million, one hundred four thousand, two hundred thirty-one".