51813074 has 4 divisors (see below), whose sum is σ = 77719614. Its totient is φ = 25906536.

The previous prime is 51813071. The next prime is 51813077. The reversal of 51813074 is 47031815.

51813074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (51813071) and next prime (51813077).

It can be written as a sum of positive squares in only one way, i.e., 44289025 + 7524049 = 6655^2 + 2743^2 .

It is not an unprimeable number, because it can be changed into a prime (51813071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12953267 + ... + 12953270.

Almost surely, 2^51813074 is an apocalyptic number.

51813074 is a deficient number, since it is larger than the sum of its proper divisors (25906540).

51813074 is a wasteful number, since it uses less digits than its factorization.

51813074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25906539.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 51813074 is about 7198.1298960216. The cubic root of 51813074 is about 372.8033329428.

Adding to 51813074 its reverse (47031815), we get a palindrome (98844889).

The spelling of 51813074 in words is "fifty-one million, eight hundred thirteen thousand, seventy-four".