575421 has 32 divisors (see below), whose sum is σ = 995328. Its totient is φ = 287040.

The previous prime is 575417. The next prime is 575429. The reversal of 575421 is 124575.

It is not a de Polignac number, because 575421 - 2² = 575417 is a prime.

It is a super-2 number, since 2×575421² = 662218654482, which contains 22 as substring.

575421 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 575391 and 575400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (575429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10831 + ... + 10883.

It is an arithmetic number, because the mean of its divisors is an integer number (31104).

2⁵⁷⁵⁴²¹ is an apocalyptic number.

It is an amenable number.

575421 is a deficient number, since it is larger than the sum of its proper divisors (419907).

575421 is a wasteful number, since it uses less digits than its factorization.

575421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121.

The product of its digits is 1400, while the sum is 24.

The square root of 575421 is about 758.5650927903. The cubic root of 575421 is about 83.1754646742.

Adding to 575421 its reverse (124575), we get a palindrome (699996).

It can be divided in two parts, 5754 and 21, that added together give a palindrome (5775).

The spelling of 575421 in words is "five hundred seventy-five thousand, four hundred twenty-one".