7550989 has 2 divisors, whose sum is σ = 7550990. Its totient is φ = 7550988.

The previous prime is 7550987. The next prime is 7551001. The reversal of 7550989 is 9890557.

7550989 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., 5904900 + 1646089 = 2430^2 + 1283^2 .

It is a cyclic number.

It is not a de Polignac number, because 7550989 - 2¹ = 7550987 is a prime.

Together with 7550987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7550981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3775494 + 3775495.

It is an arithmetic number, because the mean of its divisors is an integer number (3775495).

Almost surely, 2^7550989 is an apocalyptic number.

It is an amenable number.

7550989 is a deficient number, since it is larger than the sum of its proper divisors (1).

7550989 is an equidigital number, since it uses as much as digits as its factorization.

7550989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 43.

The square root of 7550989 is about 2747.9062938899. The cubic root of 7550989 is about 196.1859698885.

The spelling of 7550989 in words is "seven million, five hundred fifty thousand, nine hundred eighty-nine".