525547 has 4 divisors (see below), whose sum is σ = 573336. Its totient is φ = 477760.

The previous prime is 525541. The next prime is 525571. The reversal of 525547 is 745525.

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 525547 - 2¹⁹ = 1259 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (525541) 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, 23878 + ... + 23899.

It is an arithmetic number, because the mean of its divisors is an integer number (143334).

2⁵²⁵⁵⁴⁷ is an apocalyptic number.

525547 is the 388-th centered heptagonal number.

525547 is a deficient number, since it is larger than the sum of its proper divisors (47789).

525547 is a wasteful number, since it uses less digits than its factorization.

525547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47788.

The product of its digits is 7000, while the sum is 28.

The square root of 525547 is about 724.9462049007. The cubic root of 525547 is about 80.6994398929.

It can be divided in two parts, 5 and 25547, that added together give a palindrome (25552).

The spelling of 525547 in words is "five hundred twenty-five thousand, five hundred forty-seven".