52805917 has 8 divisors (see below), whose sum is σ = 53479224. Its totient is φ = 52136448.

The previous prime is 52805911. The next prime is 52805923. The reversal of 52805917 is 71950825.

It is an interprime number because it is at equal distance from previous prime (52805911) and next prime (52805923).

It can be written as a sum of positive squares in 4 ways, for example, as 301401 + 52504516 = 549^2 + 7246^2 .

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 52805917 - 2⁷ = 52805789 is a prime.

It is a super-3 number, since 3×52805917³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52805911) 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, 34623 + ... + 36115.

It is an arithmetic number, because the mean of its divisors is an integer number (6684903).

Almost surely, 2^52805917 is an apocalyptic number.

It is an amenable number.

52805917 is a deficient number, since it is larger than the sum of its proper divisors (673307).

52805917 is a wasteful number, since it uses less digits than its factorization.

52805917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 52805917 is about 7266.7679885903. The cubic root of 52805917 is about 375.1695044075.

The spelling of 52805917 in words is "fifty-two million, eight hundred five thousand, nine hundred seventeen".