51125329 has 8 divisors (see below), whose sum is σ = 52110720. Its totient is φ = 50144016.

The previous prime is 51125303. The next prime is 51125339. The reversal of 51125329 is 92352115.

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 51125329 - 2⁷ = 51125201 is a prime.

It is a super-2 number, since 2×51125329² = 5227598530716482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51125297 and 51125306.

It is not an unprimeable number, because it can be changed into a prime (51125339) 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, 37864 + ... + 39190.

It is an arithmetic number, because the mean of its divisors is an integer number (6513840).

Almost surely, 2^51125329 is an apocalyptic number.

51125329 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

51125329 is a deficient number, since it is larger than the sum of its proper divisors (985391).

51125329 is a wasteful number, since it uses less digits than its factorization.

51125329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039.

The product of its digits is 2700, while the sum is 28.

The square root of 51125329 is about 7150.1978294310. The cubic root of 51125329 is about 371.1465021534.

The spelling of 51125329 in words is "fifty-one million, one hundred twenty-five thousand, three hundred twenty-nine".