51299423 has 8 divisors (see below), whose sum is σ = 59824800. Its totient is φ = 43970640.

The previous prime is 51299383. The next prime is 51299429. The reversal of 51299423 is 32499215.

It is not a de Polignac number, because 51299423 - 2⁸ = 51299167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51299429) 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, 74438 + ... + 75123.

It is an arithmetic number, because the mean of its divisors is an integer number (7478100).

Almost surely, 2^51299423 is an apocalyptic number.

51299423 is a deficient number, since it is larger than the sum of its proper divisors (8525377).

51299423 is an equidigital number, since it uses as much as digits as its factorization.

51299423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149582 (or 149568 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 51299423 is about 7162.3615518905. The cubic root of 51299423 is about 371.5673058030.

The spelling of 51299423 in words is "fifty-one million, two hundred ninety-nine thousand, four hundred twenty-three".