51062647 has 4 divisors (see below), whose sum is σ = 51539976. Its totient is φ = 50585320.

The previous prime is 51062639. The next prime is 51062651. The reversal of 51062647 is 74626015.

It is a happy number.

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

It is not a de Polignac number, because 51062647 - 2³ = 51062639 is a prime.

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 a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51062617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238504 + ... + 238717.

It is an arithmetic number, because the mean of its divisors is an integer number (12884994).

Almost surely, 2^51062647 is an apocalyptic number.

51062647 is a deficient number, since it is larger than the sum of its proper divisors (477329).

51062647 is a wasteful number, since it uses less digits than its factorization.

51062647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477328.

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

The square root of 51062647 is about 7145.8132497288. The cubic root of 51062647 is about 370.9947592394.

The spelling of 51062647 in words is "fifty-one million, sixty-two thousand, six hundred forty-seven".