52485729 has 4 divisors (see below), whose sum is σ = 69980976. Its totient is φ = 34990484.

The previous prime is 52485707. The next prime is 52485731. The reversal of 52485729 is 92758425.

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 a cyclic number.

It is not a de Polignac number, because 52485729 - 2⁸ = 52485473 is a prime.

It is a super-2 number, since 2×52485729² = 5509503497322882, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52485739) 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, 8747619 + ... + 8747624.

It is an arithmetic number, because the mean of its divisors is an integer number (17495244).

Almost surely, 2^52485729 is an apocalyptic number.

It is an amenable number.

52485729 is a deficient number, since it is larger than the sum of its proper divisors (17495247).

52485729 is a wasteful number, since it uses less digits than its factorization.

52485729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17495246.

The product of its digits is 201600, while the sum is 42.

The square root of 52485729 is about 7244.7035136022. The cubic root of 52485729 is about 374.4096881282.

The spelling of 52485729 in words is "fifty-two million, four hundred eighty-five thousand, seven hundred twenty-nine".