51424831 has 8 divisors (see below), whose sum is σ = 52035984. Its totient is φ = 50816640.

The previous prime is 51424829. The next prime is 51424837. The reversal of 51424831 is 13842415.

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 51424831 - 2¹ = 51424829 is a prime.

It is a super-2 number, since 2×51424831² = 5289026486757122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51424831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51424837) 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, 64125 + ... + 64921.

It is an arithmetic number, because the mean of its divisors is an integer number (6504498).

Almost surely, 2^51424831 is an apocalyptic number.

51424831 is a deficient number, since it is larger than the sum of its proper divisors (611153).

51424831 is a wasteful number, since it uses less digits than its factorization.

51424831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481.

The product of its digits is 3840, while the sum is 28.

The square root of 51424831 is about 7171.1108623420. The cubic root of 51424831 is about 371.8698406741.

The spelling of 51424831 in words is "fifty-one million, four hundred twenty-four thousand, eight hundred thirty-one".