573612021 has 12 divisors (see below), whose sum is σ = 830089260. Its totient is φ = 381697920.

The previous prime is 573611989. The next prime is 573612023. The reversal of 573612021 is 120216375.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 400400100 + 173211921 = 20010^2 + 13161^2 .

It is not a de Polignac number, because 573612021 - 2⁵ = 573611989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (573612023) 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, 54036 + ... + 63773.

It is an arithmetic number, because the mean of its divisors is an integer number (69174105).

Almost surely, 2^573612021 is an apocalyptic number.

It is an amenable number.

573612021 is a deficient number, since it is larger than the sum of its proper divisors (256477239).

573612021 is a wasteful number, since it uses less digits than its factorization.

573612021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118356 (or 118353 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 573612021 is about 23950.1987674424. The cubic root of 573612021 is about 830.8821225840.

Adding to 573612021 its reverse (120216375), we get a palindrome (693828396).

The spelling of 573612021 in words is "five hundred seventy-three million, six hundred twelve thousand, twenty-one".