51124313 has 4 divisors (see below), whose sum is σ = 51186960. Its totient is φ = 51061668.

The previous prime is 51124289. The next prime is 51124319. The reversal of 51124313 is 31342115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51124313 - 2⁸ = 51124057 is a prime.

It is a super-2 number, since 2×51124313² = 5227390759443938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51124319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30083 + ... + 31736.

It is an arithmetic number, because the mean of its divisors is an integer number (12796740).

Almost surely, 2^51124313 is an apocalyptic number.

It is an amenable number.

51124313 is a deficient number, since it is larger than the sum of its proper divisors (62647).

51124313 is an equidigital number, since it uses as much as digits as its factorization.

51124313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62646.

The product of its digits is 360, while the sum is 20.

The square root of 51124313 is about 7150.1267820927. The cubic root of 51124313 is about 371.1440435720.

Adding to 51124313 its reverse (31342115), we get a palindrome (82466428).

The spelling of 51124313 in words is "fifty-one million, one hundred twenty-four thousand, three hundred thirteen".