526442261 has 4 divisors (see below), whose sum is σ = 535072524. Its totient is φ = 517812000.

The previous prime is 526442227. The next prime is 526442317. The reversal of 526442261 is 162244625.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108035236 + 418407025 = 10394^2 + 20455^2 .

It is a cyclic number.

It is not a de Polignac number, because 526442261 - 2¹⁸ = 526180117 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 (526442221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4315040 + ... + 4315161.

It is an arithmetic number, because the mean of its divisors is an integer number (133768131).

Almost surely, 2^526442261 is an apocalyptic number.

It is an amenable number.

526442261 is a deficient number, since it is larger than the sum of its proper divisors (8630263).

526442261 is an equidigital number, since it uses as much as digits as its factorization.

526442261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8630262.

The product of its digits is 23040, while the sum is 32.

The square root of 526442261 is about 22944.3296045014. The cubic root of 526442261 is about 807.4523730405.

Adding to 526442261 its reverse (162244625), we get a palindrome (688686886).

The spelling of 526442261 in words is "five hundred twenty-six million, four hundred forty-two thousand, two hundred sixty-one".