51046747 has 4 divisors (see below), whose sum is σ = 52132896. Its totient is φ = 49960600.

The previous prime is 51046727. The next prime is 51046759. The reversal of 51046747 is 74764015.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51046747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51046727) 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, 543004 + ... + 543097.

It is an arithmetic number, because the mean of its divisors is an integer number (13033224).

Almost surely, 2^51046747 is an apocalyptic number.

51046747 is a deficient number, since it is larger than the sum of its proper divisors (1086149).

51046747 is a wasteful number, since it uses less digits than its factorization.

51046747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086148.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 51046747 is about 7144.7006235391. The cubic root of 51046747 is about 370.9562481856.

The spelling of 51046747 in words is "fifty-one million, forty-six thousand, seven hundred forty-seven".