51818434 has 16 divisors (see below), whose sum is σ = 81982080. Its totient is φ = 24496560.

The previous prime is 51818411. The next prime is 51818443. The reversal of 51818434 is 43481815.

It is a self number, because there is not a number n which added to its sum of digits gives 51818434.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24087 + ... + 26149.

It is an arithmetic number, because the mean of its divisors is an integer number (5123880).

Almost surely, 2^51818434 is an apocalyptic number.

51818434 is a deficient number, since it is larger than the sum of its proper divisors (30163646).

51818434 is a wasteful number, since it uses less digits than its factorization.

51818434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2745.

The product of its digits is 15360, while the sum is 34.

The square root of 51818434 is about 7198.5022053202. The cubic root of 51818434 is about 372.8161878512.

The spelling of 51818434 in words is "fifty-one million, eight hundred eighteen thousand, four hundred thirty-four".