52509705 has 16 divisors (see below), whose sum is σ = 85440960. Its totient is φ = 27530048.

The previous prime is 52509659. The next prime is 52509707. The reversal of 52509705 is 50790525.

It is a cyclic number.

It is not a de Polignac number, because 52509705 - 2⁷ = 52509577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52509707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28782 + ... + 30551.

It is an arithmetic number, because the mean of its divisors is an integer number (5340060).

Almost surely, 2^52509705 is an apocalyptic number.

It is an amenable number.

52509705 is a deficient number, since it is larger than the sum of its proper divisors (32931255).

52509705 is a wasteful number, since it uses less digits than its factorization.

52509705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59400.

The product of its (nonzero) digits is 15750, while the sum is 33.

The square root of 52509705 is about 7246.3580507728. The cubic root of 52509705 is about 374.4666907986.

The spelling of 52509705 in words is "fifty-two million, five hundred nine thousand, seven hundred five".