51713247 has 8 divisors (see below), whose sum is σ = 68990080. Its totient is φ = 34455960.

The previous prime is 51713237. The next prime is 51713251. The reversal of 51713247 is 74231715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51713247 - 2¹⁶ = 51647711 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 (51713237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3204 + ... + 10662.

It is an arithmetic number, because the mean of its divisors is an integer number (8623760).

Almost surely, 2^51713247 is an apocalyptic number.

51713247 is a deficient number, since it is larger than the sum of its proper divisors (17276833).

51713247 is a wasteful number, since it uses less digits than its factorization.

51713247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9773.

The product of its digits is 5880, while the sum is 30.

The square root of 51713247 is about 7191.1923211662. The cubic root of 51713247 is about 372.5637552841.

The spelling of 51713247 in words is "fifty-one million, seven hundred thirteen thousand, two hundred forty-seven".