526233221 has 8 divisors (see below), whose sum is σ = 529650264. Its totient is φ = 522823680.

The previous prime is 526233179. The next prime is 526233229. The reversal of 526233221 is 122332625.

It can be written as a sum of positive squares in 4 ways, for example, as 35832196 + 490401025 = 5986^2 + 22145^2 .

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 526233221 - 2¹⁸ = 525971077 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 (526233229) 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, 214361 + ... + 216801.

It is an arithmetic number, because the mean of its divisors is an integer number (66206283).

Almost surely, 2^526233221 is an apocalyptic number.

It is an amenable number.

526233221 is a deficient number, since it is larger than the sum of its proper divisors (3417043).

526233221 is a wasteful number, since it uses less digits than its factorization.

526233221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3751.

The product of its digits is 4320, while the sum is 26.

The square root of 526233221 is about 22939.7737783091. The cubic root of 526233221 is about 807.3454843383.

Adding to 526233221 its reverse (122332625), we get a palindrome (648565846).

It can be divided in two parts, 5262 and 33221, that added together give a palindrome (38483).

The spelling of 526233221 in words is "five hundred twenty-six million, two hundred thirty-three thousand, two hundred twenty-one".