51774466 has 4 divisors (see below), whose sum is σ = 77661702. Its totient is φ = 25887232.

The previous prime is 51774461. The next prime is 51774473. The reversal of 51774466 is 66447715.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66447715 = 5 ⋅13289543.

It can be written as a sum of positive squares in only one way, i.e., 46580625 + 5193841 = 6825^2 + 2279^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (51774461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12943615 + ... + 12943618.

Almost surely, 2^51774466 is an apocalyptic number.

51774466 is a deficient number, since it is larger than the sum of its proper divisors (25887236).

51774466 is a wasteful number, since it uses less digits than its factorization.

51774466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25887235.

The product of its digits is 141120, while the sum is 40.

The square root of 51774466 is about 7195.4475885799. The cubic root of 51774466 is about 372.7107130277.

The spelling of 51774466 in words is "fifty-one million, seven hundred seventy-four thousand, four hundred sixty-six".