52390785 has 8 divisors (see below), whose sum is σ = 83825280. Its totient is φ = 27941744.

The previous prime is 52390781. The next prime is 52390799. The reversal of 52390785 is 58709325.

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 52390785 - 2² = 52390781 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52390781) 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, 1746345 + ... + 1746374.

It is an arithmetic number, because the mean of its divisors is an integer number (10478160).

Almost surely, 2^52390785 is an apocalyptic number.

It is an amenable number.

52390785 is a deficient number, since it is larger than the sum of its proper divisors (31434495).

52390785 is a wasteful number, since it uses less digits than its factorization.

52390785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492727.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 52390785 is about 7238.1478984613. The cubic root of 52390785 is about 374.1837891998.

The spelling of 52390785 in words is "fifty-two million, three hundred ninety thousand, seven hundred eighty-five".