7522021889 has 2 divisors, whose sum is σ = 7522021890. Its totient is φ = 7522021888.

The previous prime is 7522021879. The next prime is 7522021901. The reversal of 7522021889 is 9881202257.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3998412289 + 3523609600 = 63233^2 + 59360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7522021889 is a prime.

It is not a weakly prime, because it can be changed into another prime (7522021879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3761010944 + 3761010945.

It is an arithmetic number, because the mean of its divisors is an integer number (3761010945).

Almost surely, 2^7522021889 is an apocalyptic number.

It is an amenable number.

7522021889 is a deficient number, since it is larger than the sum of its proper divisors (1).

7522021889 is an equidigital number, since it uses as much as digits as its factorization.

7522021889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 7522021889 is about 86729.5906193497. The cubic root of 7522021889 is about 1959.3477880779.

The spelling of 7522021889 in words is "seven billion, five hundred twenty-two million, twenty-one thousand, eight hundred eighty-nine".