51744905 has 8 divisors (see below), whose sum is σ = 62342784. Its totient is φ = 41230000.

The previous prime is 51744887. The next prime is 51744937. The reversal of 51744905 is 50944715.

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

It is not a de Polignac number, because 51744905 - 2²⁴ = 34967689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19361 + ... + 21870.

It is an arithmetic number, because the mean of its divisors is an integer number (7792848).

Almost surely, 2^51744905 is an apocalyptic number.

It is an amenable number.

51744905 is a deficient number, since it is larger than the sum of its proper divisors (10597879).

51744905 is a wasteful number, since it uses less digits than its factorization.

51744905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41487.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 51744905 is about 7193.3931492725. The cubic root of 51744905 is about 372.6397655783.

The spelling of 51744905 in words is "fifty-one million, seven hundred forty-four thousand, nine hundred five".