51744047 has 4 divisors (see below), whose sum is σ = 51769416. Its totient is φ = 51718680.

The previous prime is 51744037. The next prime is 51744061. The reversal of 51744047 is 74044715.

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

It is a cyclic number.

It is not a de Polignac number, because 51744047 - 2⁶ = 51743983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51744037) 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, 9329 + ... + 13802.

It is an arithmetic number, because the mean of its divisors is an integer number (12942354).

Almost surely, 2^51744047 is an apocalyptic number.

51744047 is a deficient number, since it is larger than the sum of its proper divisors (25369).

51744047 is a wasteful number, since it uses less digits than its factorization.

51744047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25368.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 51744047 is about 7193.3335109669. Note that the first 3 decimals coincide. The cubic root of 51744047 is about 372.6377059443.

The spelling of 51744047 in words is "fifty-one million, seven hundred forty-four thousand, forty-seven".