51715445 has 16 divisors (see below), whose sum is σ = 66203568. Its totient is φ = 38645760.

The previous prime is 51715429. The next prime is 51715451. The reversal of 51715445 is 54451715.

It can be written as a sum of positive squares in 8 ways, for example, as 206116 + 51509329 = 454^2 + 7177^2 .

It is not a de Polignac number, because 51715445 - 2⁴ = 51715429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9425 + ... + 13865.

It is an arithmetic number, because the mean of its divisors is an integer number (4137723).

Almost surely, 2^51715445 is an apocalyptic number.

It is an amenable number.

51715445 is a deficient number, since it is larger than the sum of its proper divisors (14488123).

51715445 is a wasteful number, since it uses less digits than its factorization.

51715445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4600.

The product of its digits is 14000, while the sum is 32.

The square root of 51715445 is about 7191.3451453814. The cubic root of 51715445 is about 372.5690336449.

The spelling of 51715445 in words is "fifty-one million, seven hundred fifteen thousand, four hundred forty-five".