52090385 has 16 divisors (see below), whose sum is σ = 65318400. Its totient is φ = 39832320.

The previous prime is 52090369. The next prime is 52090387. The reversal of 52090385 is 58309025.

It is a happy number.

It is not a de Polignac number, because 52090385 - 2⁴ = 52090369 is a prime.

It is a super-4 number, since 4×52090385⁴ (a number of 32 digits) contains 4444 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52090387) 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, 10841 + ... + 14889.

It is an arithmetic number, because the mean of its divisors is an integer number (4082400).

Almost surely, 2^52090385 is an apocalyptic number.

It is an amenable number.

52090385 is a deficient number, since it is larger than the sum of its proper divisors (13228015).

52090385 is a wasteful number, since it uses less digits than its factorization.

52090385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4168.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 52090385 is about 7217.3669021327. The cubic root of 52090385 is about 373.4672488512.

The spelling of 52090385 in words is "fifty-two million, ninety thousand, three hundred eighty-five".