421585519 has 2 divisors, whose sum is σ = 421585520. Its totient is φ = 421585518.

The previous prime is 421585501. The next prime is 421585529. The reversal of 421585519 is 915585124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421585519 - 2⁵ = 421585487 is a prime.

It is a super-2 number, since 2×421585519² = 355468699660998722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421585529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210792759 + 210792760.

It is an arithmetic number, because the mean of its divisors is an integer number (210792760).

Almost surely, 2^421585519 is an apocalyptic number.

421585519 is a deficient number, since it is larger than the sum of its proper divisors (1).

421585519 is an equidigital number, since it uses as much as digits as its factorization.

421585519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 40.

The square root of 421585519 is about 20532.5477961212. The cubic root of 421585519 is about 749.8284164521.

The spelling of 421585519 in words is "four hundred twenty-one million, five hundred eighty-five thousand, five hundred nineteen".