52117517 has 4 divisors (see below), whose sum is σ = 54383520. Its totient is φ = 49851516.

The previous prime is 52117511. The next prime is 52117523. The reversal of 52117517 is 71571125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (52117511) and next prime (52117523).

It is a cyclic number.

It is not a de Polignac number, because 52117517 - 2¹² = 52113421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52117517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52117511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1132967 + ... + 1133012.

It is an arithmetic number, because the mean of its divisors is an integer number (13595880).

Almost surely, 2^52117517 is an apocalyptic number.

It is an amenable number.

52117517 is a deficient number, since it is larger than the sum of its proper divisors (2266003).

52117517 is a wasteful number, since it uses less digits than its factorization.

52117517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266002.

The product of its digits is 2450, while the sum is 29.

The square root of 52117517 is about 7219.2462902993. The cubic root of 52117517 is about 373.5320794632.

The spelling of 52117517 in words is "fifty-two million, one hundred seventeen thousand, five hundred seventeen".