52785407 has 4 divisors (see below), whose sum is σ = 52806216. Its totient is φ = 52764600.

The previous prime is 52785377. The next prime is 52785419. The reversal of 52785407 is 70458725.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52785407 - 2¹⁰ = 52784383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52785457) 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, 5969 + ... + 11882.

It is an arithmetic number, because the mean of its divisors is an integer number (13201554).

Almost surely, 2^52785407 is an apocalyptic number.

52785407 is a deficient number, since it is larger than the sum of its proper divisors (20809).

52785407 is a wasteful number, since it uses less digits than its factorization.

52785407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20808.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 52785407 is about 7265.3566326781. The cubic root of 52785407 is about 375.1209257418.

The spelling of 52785407 in words is "fifty-two million, seven hundred eighty-five thousand, four hundred seven".