59085821 has 4 divisors (see below), whose sum is σ = 59412444. Its totient is φ = 58759200.

The previous prime is 59085809. The next prime is 59085823. The reversal of 59085821 is 12858095.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12858095 = 5 ⋅2571619.

It can be written as a sum of positive squares in 2 ways, for example, as 30580900 + 28504921 = 5530^2 + 5339^2 .

It is a cyclic number.

It is not a de Polignac number, because 59085821 - 2⁶ = 59085757 is a prime.

It is a super-2 number, since 2×59085821² = 6982268486488082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (59085823) 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, 163040 + ... + 163401.

It is an arithmetic number, because the mean of its divisors is an integer number (14853111).

Almost surely, 2^59085821 is an apocalyptic number.

It is an amenable number.

59085821 is a deficient number, since it is larger than the sum of its proper divisors (326623).

59085821 is a wasteful number, since it uses less digits than its factorization.

59085821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326622.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 59085821 is about 7686.7301890986. The cubic root of 59085821 is about 389.4883076792.

The spelling of 59085821 in words is "fifty-nine million, eighty-five thousand, eight hundred twenty-one".