7573606021 has 2 divisors, whose sum is σ = 7573606022. Its totient is φ = 7573606020.

The previous prime is 7573606013. The next prime is 7573606043. The reversal of 7573606021 is 1206063757.

7573606021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7531809796 + 41796225 = 86786^2 + 6465^2 .

It is a cyclic number.

It is not a de Polignac number, because 7573606021 - 2³ = 7573606013 is a prime.

It is a super-2 number, since 2×7573606021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7573606091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3786803010 + 3786803011.

It is an arithmetic number, because the mean of its divisors is an integer number (3786803011).

Almost surely, 2^7573606021 is an apocalyptic number.

It is an amenable number.

7573606021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7573606021 is an equidigital number, since it uses as much as digits as its factorization.

7573606021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 7573606021 is about 87026.4673590742. The cubic root of 7573606021 is about 1963.8164930904.

Adding to 7573606021 its reverse (1206063757), we get a palindrome (8779669778).

The spelling of 7573606021 in words is "seven billion, five hundred seventy-three million, six hundred six thousand, twenty-one".