52090331 has 4 divisors (see below), whose sum is σ = 54355152. Its totient is φ = 49825512.

The previous prime is 52090327. The next prime is 52090349. The reversal of 52090331 is 13309025.

It is a happy number.

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 52090331 - 2² = 52090327 is a prime.

It is a super-3 number, since 3×52090331³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 2264797 = 52090331 / (5 + 2 + 0 + 9 + 0 + 3 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52090297 and 52090306.

It is not an unprimeable number, because it can be changed into a prime (52090321) 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, 1132376 + ... + 1132421.

It is an arithmetic number, because the mean of its divisors is an integer number (13588788).

Almost surely, 2^52090331 is an apocalyptic number.

52090331 is a deficient number, since it is larger than the sum of its proper divisors (2264821).

52090331 is a wasteful number, since it uses less digits than its factorization.

52090331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264820.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 52090331 is about 7217.3631611552. The cubic root of 52090331 is about 373.4671197983.

Adding to 52090331 its reverse (13309025), we get a palindrome (65399356).

The spelling of 52090331 in words is "fifty-two million, ninety thousand, three hundred thirty-one".