51745015 has 8 divisors (see below), whose sum is σ = 70964640. Its totient is φ = 35482272.

The previous prime is 51745003. The next prime is 51745021. The reversal of 51745015 is 51054715.

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

It is not a de Polignac number, because 51745015 - 2⁷ = 51744887 is a prime.

It is a congruent 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, 739180 + ... + 739249.

It is an arithmetic number, because the mean of its divisors is an integer number (8870580).

Almost surely, 2^51745015 is an apocalyptic number.

51745015 is a deficient number, since it is larger than the sum of its proper divisors (19219625).

51745015 is a wasteful number, since it uses less digits than its factorization.

51745015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478441.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 51745015 is about 7193.4007951733. The cubic root of 51745015 is about 372.6400296323.

The spelling of 51745015 in words is "fifty-one million, seven hundred forty-five thousand, fifteen".