51444466 has 4 divisors (see below), whose sum is σ = 77166702. Its totient is φ = 25722232.

The previous prime is 51444443. The next prime is 51444509. The reversal of 51444466 is 66444415.

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

It can be written as a sum of positive squares in only one way, i.e., 34047225 + 17397241 = 5835^2 + 4171^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12861115 + ... + 12861118.

Almost surely, 2^51444466 is an apocalyptic number.

51444466 is a deficient number, since it is larger than the sum of its proper divisors (25722236).

51444466 is a wasteful number, since it uses less digits than its factorization.

51444466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25722235.

The product of its digits is 46080, while the sum is 34.

The square root of 51444466 is about 7172.4797664406. The cubic root of 51444466 is about 371.9171636960.

The spelling of 51444466 in words is "fifty-one million, four hundred forty-four thousand, four hundred sixty-six".