429581 has 2 divisors, whose sum is σ = 429582. Its totient is φ = 429580.

The previous prime is 429563. The next prime is 429587. The reversal of 429581 is 185924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 292681 + 136900 = 541^2 + 370^2 .

It is a cyclic number.

It is not a de Polignac number, because 429581 - 2¹⁰ = 428557 is a prime.

It is a super-2 number, since 2×429581² = 369079671122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (429587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214790 + 214791.

It is an arithmetic number, because the mean of its divisors is an integer number (214791).

2⁴²⁹⁵⁸¹ is an apocalyptic number.

It is an amenable number.

429581 is a deficient number, since it is larger than the sum of its proper divisors (1).

429581 is an equidigital number, since it uses as much as digits as its factorization.

429581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 29.

The square root of 429581 is about 655.4242900595. The cubic root of 429581 is about 75.4538993157.

The spelling of 429581 in words is "four hundred twenty-nine thousand, five hundred eighty-one".