51264706 has 4 divisors (see below), whose sum is σ = 76897062. Its totient is φ = 25632352.

The previous prime is 51264683. The next prime is 51264709. The reversal of 51264706 is 60746215.

It is a happy number.

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., 44023225 + 7241481 = 6635^2 + 2691^2 .

It is a Smith number, since the sum of its digits (31) 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 (51264709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12816175 + ... + 12816178.

Almost surely, 2^51264706 is an apocalyptic number.

51264706 is a deficient number, since it is larger than the sum of its proper divisors (25632356).

51264706 is a wasteful number, since it uses less digits than its factorization.

51264706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25632355.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 51264706 is about 7159.9375695602. The cubic root of 51264706 is about 371.4834672173.

The spelling of 51264706 in words is "fifty-one million, two hundred sixty-four thousand, seven hundred six".