51370231 has 8 divisors (see below), whose sum is σ = 56332944. Its totient is φ = 46456320.

The previous prime is 51370217. The next prime is 51370237. The reversal of 51370231 is 13207315.

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 51370231 - 2⁵ = 51370199 is a prime.

It is a super-2 number, since 2×51370231² = 5277801265986722, 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 (51370237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9976 + ... + 14221.

It is an arithmetic number, because the mean of its divisors is an integer number (7041618).

Almost surely, 2^51370231 is an apocalyptic number.

51370231 is a deficient number, since it is larger than the sum of its proper divisors (4962713).

51370231 is a wasteful number, since it uses less digits than its factorization.

51370231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24401.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 51370231 is about 7167.3029097423. The cubic root of 51370231 is about 371.7381838911.

Adding to 51370231 its reverse (13207315), we get a palindrome (64577546).

The spelling of 51370231 in words is "fifty-one million, three hundred seventy thousand, two hundred thirty-one".