122152549 has 2 divisors, whose sum is σ = 122152550. Its totient is φ = 122152548.

The previous prime is 122152543. The next prime is 122152573. The reversal of 122152549 is 945251221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102880449 + 19272100 = 10143^2 + 4390^2 .

It is a cyclic number.

It is not a de Polignac number, because 122152549 - 2¹⁹ = 121628261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122152549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122152543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61076274 + 61076275.

It is an arithmetic number, because the mean of its divisors is an integer number (61076275).

Almost surely, 2^122152549 is an apocalyptic number.

It is an amenable number.

122152549 is a deficient number, since it is larger than the sum of its proper divisors (1).

122152549 is an equidigital number, since it uses as much as digits as its factorization.

122152549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 31.

The square root of 122152549 is about 11052.2644286137. The cubic root of 122152549 is about 496.1741998359.

The spelling of 122152549 in words is "one hundred twenty-two million, one hundred fifty-two thousand, five hundred forty-nine".