51225132239 has 8 divisors (see below), whose sum is σ = 51379223808. Its totient is φ = 51071120280.

The previous prime is 51225132223. The next prime is 51225132247. The reversal of 51225132239 is 93223152215.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51225132239 - 2⁴ = 51225132223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51225132199 and 51225132208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51225122239) 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, 1424924 + ... + 1460430.

It is an arithmetic number, because the mean of its divisors is an integer number (6422402976).

Almost surely, 2^51225132239 is an apocalyptic number.

51225132239 is a deficient number, since it is larger than the sum of its proper divisors (154091569).

51225132239 is a wasteful number, since it uses less digits than its factorization.

51225132239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39805.

The product of its digits is 32400, while the sum is 35.

The spelling of 51225132239 in words is "fifty-one billion, two hundred twenty-five million, one hundred thirty-two thousand, two hundred thirty-nine".