52170233 has 4 divisors (see below), whose sum is σ = 54438528. Its totient is φ = 49901940.

The previous prime is 52170227. The next prime is 52170271. The reversal of 52170233 is 33207125.

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 52170233 - 2⁸ = 52169977 is a prime.

It is a super-2 number, since 2×52170233² = 5443466422548578, which contains 22 as substring.

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: 2268271 = 52170233 / (5 + 2 + 1 + 7 + 0 + 2 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52170199 and 52170208.

It is not an unprimeable number, because it can be changed into a prime (52170533) 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, 1134113 + ... + 1134158.

It is an arithmetic number, because the mean of its divisors is an integer number (13609632).

Almost surely, 2^52170233 is an apocalyptic number.

It is an amenable number.

52170233 is a deficient number, since it is larger than the sum of its proper divisors (2268295).

52170233 is a wasteful number, since it uses less digits than its factorization.

52170233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268294.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 52170233 is about 7222.8964411793. The cubic root of 52170233 is about 373.6579775161.

Adding to 52170233 its reverse (33207125), we get a palindrome (85377358).

The spelling of 52170233 in words is "fifty-two million, one hundred seventy thousand, two hundred thirty-three".