526981 has 8 divisors (see below), whose sum is σ = 648704. Its totient is φ = 416880.

The previous prime is 526963. The next prime is 526993. The reversal of 526981 is 189625.

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 526981 - 2⁷ = 526853 is a prime.

It is a super-2 number, since 2×526981² = 555417948722, which contains 22 as substring.

526981 is a lucky number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (526931) 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, 2805 + ... + 2986.

It is an arithmetic number, because the mean of its divisors is an integer number (81088).

2⁵²⁶⁹⁸¹ is an apocalyptic number.

It is an amenable number.

526981 is a deficient number, since it is larger than the sum of its proper divisors (121723).

526981 is a wasteful number, since it uses less digits than its factorization.

526981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5811.

The product of its digits is 4320, while the sum is 31.

The square root of 526981 is about 725.9345700544. The cubic root of 526981 is about 80.7727716803.

The spelling of 526981 in words is "five hundred twenty-six thousand, nine hundred eighty-one".