122251589 has 4 divisors (see below), whose sum is σ = 125555724. Its totient is φ = 118947456.

The previous prime is 122251553. The next prime is 122251637. The reversal of 122251589 is 985152221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117007489 + 5244100 = 10817^2 + 2290^2 .

It is a cyclic number.

It is not a de Polignac number, because 122251589 - 2⁸ = 122251333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122251489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1652012 + ... + 1652085.

It is an arithmetic number, because the mean of its divisors is an integer number (31388931).

Almost surely, 2^122251589 is an apocalyptic number.

It is an amenable number.

122251589 is a deficient number, since it is larger than the sum of its proper divisors (3304135).

122251589 is an equidigital number, since it uses as much as digits as its factorization.

122251589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304134.

The product of its digits is 14400, while the sum is 35.

The square root of 122251589 is about 11056.7440505784. The cubic root of 122251589 is about 496.3082612155.

The spelling of 122251589 in words is "one hundred twenty-two million, two hundred fifty-one thousand, five hundred eighty-nine".