51745147 has 8 divisors (see below), whose sum is σ = 54282240. Its totient is φ = 49232040.

The previous prime is 51745139. The next prime is 51745153. The reversal of 51745147 is 74154715.

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

It is a cyclic number.

It is not a de Polignac number, because 51745147 - 2³ = 51745139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51742147) 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, 1497 + ... + 10282.

It is an arithmetic number, because the mean of its divisors is an integer number (6785280).

Almost surely, 2^51745147 is an apocalyptic number.

51745147 is a deficient number, since it is larger than the sum of its proper divisors (2537093).

51745147 is a wasteful number, since it uses less digits than its factorization.

51745147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11993.

The product of its digits is 19600, while the sum is 34.

The square root of 51745147 is about 7193.4099702436. The cubic root of 51745147 is about 372.6403464965.

The spelling of 51745147 in words is "fifty-one million, seven hundred forty-five thousand, one hundred forty-seven".