526722491 has 4 divisors (see below), whose sum is σ = 540958272. Its totient is φ = 512486712.

The previous prime is 526722473. The next prime is 526722499. The reversal of 526722491 is 194227625.

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 526722491 - 2¹⁴ = 526706107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (526722499) 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, 7117835 + ... + 7117908.

It is an arithmetic number, because the mean of its divisors is an integer number (135239568).

Almost surely, 2^526722491 is an apocalyptic number.

526722491 is a deficient number, since it is larger than the sum of its proper divisors (14235781).

526722491 is a wasteful number, since it uses less digits than its factorization.

526722491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14235780.

The product of its digits is 60480, while the sum is 38.

The square root of 526722491 is about 22950.4355296365. The cubic root of 526722491 is about 807.5956190386.

The spelling of 526722491 in words is "five hundred twenty-six million, seven hundred twenty-two thousand, four hundred ninety-one".