51630673 has 4 divisors (see below), whose sum is σ = 51709680. Its totient is φ = 51551668.

The previous prime is 51630647. The next prime is 51630679. The reversal of 51630673 is 37603615.

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 51630673 - 2⁵ = 51630641 is a prime.

It is a super-3 number, since 3×51630673³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51630679) 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, 38515 + ... + 39832.

It is an arithmetic number, because the mean of its divisors is an integer number (12927420).

Almost surely, 2^51630673 is an apocalyptic number.

It is an amenable number.

51630673 is a deficient number, since it is larger than the sum of its proper divisors (79007).

51630673 is an equidigital number, since it uses as much as digits as its factorization.

51630673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79006.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 51630673 is about 7185.4486985852. The cubic root of 51630673 is about 372.3653504896.

The spelling of 51630673 in words is "fifty-one million, six hundred thirty thousand, six hundred seventy-three".