53047917 has 18 divisors (see below), whose sum is σ = 82974762. Its totient is φ = 32643936.

The previous prime is 53047849. The next prime is 53047933. The reversal of 53047917 is 71974035.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1121481 + 51926436 = 1059^2 + 7206^2 .

It is not a de Polignac number, because 53047917 - 2¹⁰ = 53046893 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53047937) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15918 + ... + 18959.

It is an arithmetic number, because the mean of its divisors is an integer number (4609709).

Almost surely, 2^53047917 is an apocalyptic number.

It is an amenable number.

53047917 is a deficient number, since it is larger than the sum of its proper divisors (29926845).

53047917 is a wasteful number, since it uses less digits than its factorization.

53047917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34909 (or 34893 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 53047917 is about 7283.4000988549. The cubic root of 53047917 is about 375.7417425473.

The spelling of 53047917 in words is "fifty-three million, forty-seven thousand, nine hundred seventeen".