527491 has 4 divisors (see below), whose sum is σ = 535432. Its totient is φ = 519552.

The previous prime is 527489. The next prime is 527507. The reversal of 527491 is 194725.

527491 = 294² + 295² + ... + 299².

It is a happy number.

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 527491 - 2¹ = 527489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (527411) 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, 3870 + ... + 4003.

It is an arithmetic number, because the mean of its divisors is an integer number (133858).

2⁵²⁷⁴⁹¹ is an apocalyptic number.

527491 is a deficient number, since it is larger than the sum of its proper divisors (7941).

527491 is an equidigital number, since it uses as much as digits as its factorization.

527491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7940.

The product of its digits is 2520, while the sum is 28.

The square root of 527491 is about 726.2857564348. The cubic root of 527491 is about 80.7988199514.

The spelling of 527491 in words is "five hundred twenty-seven thousand, four hundred ninety-one".