526401 has 12 divisors (see below), whose sum is σ = 793728. Its totient is φ = 335544.

The previous prime is 526397. The next prime is 526423. The reversal of 526401 is 104625.

It is a happy number.

It is not a de Polignac number, because 526401 - 2² = 526397 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (526441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1065 + ... + 1478.

It is an arithmetic number, because the mean of its divisors is an integer number (66144).

2⁵²⁶⁴⁰¹ is an apocalyptic number.

It is an amenable number.

526401 is a deficient number, since it is larger than the sum of its proper divisors (267327).

526401 is a wasteful number, since it uses less digits than its factorization.

526401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572 (or 2569 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 526401 is about 725.5349750357. The cubic root of 526401 is about 80.7431277240.

The spelling of 526401 in words is "five hundred twenty-six thousand, four hundred one".