122773549 has 2 divisors, whose sum is σ = 122773550. Its totient is φ = 122773548.

The previous prime is 122773537. The next prime is 122773577. The reversal of 122773549 is 945377221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110628324 + 12145225 = 10518^2 + 3485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122773549 is a prime.

It is a Chen prime.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61386774 + 61386775.

It is an arithmetic number, because the mean of its divisors is an integer number (61386775).

Almost surely, 2^122773549 is an apocalyptic number.

It is an amenable number.

122773549 is a deficient number, since it is larger than the sum of its proper divisors (1).

122773549 is an equidigital number, since it uses as much as digits as its factorization.

122773549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 122773549 is about 11080.3226036068. The cubic root of 122773549 is about 497.0135969733.

The spelling of 122773549 in words is "one hundred twenty-two million, seven hundred seventy-three thousand, five hundred forty-nine".