52587817 has 8 divisors (see below), whose sum is σ = 57601800. Its totient is φ = 47787264.

The previous prime is 52587809. The next prime is 52587823. The reversal of 52587817 is 71878525.

It can be written as a sum of positive squares in 4 ways, for example, as 4756761 + 47831056 = 2181^2 + 6916^2 .

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 52587817 - 2³ = 52587809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52587217) 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, 52842 + ... + 53827.

It is an arithmetic number, because the mean of its divisors is an integer number (7200225).

Almost surely, 2^52587817 is an apocalyptic number.

It is an amenable number.

52587817 is a deficient number, since it is larger than the sum of its proper divisors (5013983).

52587817 is a wasteful number, since it uses less digits than its factorization.

52587817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106715.

The product of its digits is 156800, while the sum is 43.

The square root of 52587817 is about 7251.7457898081. The cubic root of 52587817 is about 374.6522809361.

The spelling of 52587817 in words is "fifty-two million, five hundred eighty-seven thousand, eight hundred seventeen".