573720121 has 8 divisors (see below), whose sum is σ = 621946304. Its totient is φ = 526078800.

The previous prime is 573720109. The next prime is 573720163. The reversal of 573720121 is 121027375.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 573720121 - 2¹⁵ = 573687353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 573720121.

It is not an unprimeable number, because it can be changed into a prime (573720101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144171 + ... + 148096.

It is an arithmetic number, because the mean of its divisors is an integer number (77743288).

Almost surely, 2^573720121 is an apocalyptic number.

It is an amenable number.

573720121 is a deficient number, since it is larger than the sum of its proper divisors (48226183).

573720121 is a wasteful number, since it uses less digits than its factorization.

573720121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292431.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 573720121 is about 23952.4554273669. The cubic root of 573720121 is about 830.9343139099.

Adding to 573720121 its reverse (121027375), we get a palindrome (694747496).

The spelling of 573720121 in words is "five hundred seventy-three million, seven hundred twenty thousand, one hundred twenty-one".