755645122 has 4 divisors (see below), whose sum is σ = 1133467686. Its totient is φ = 377822560.

The previous prime is 755645041. The next prime is 755645159. The reversal of 755645122 is 221546557.

It is a Cunningham number, because it is equal to 27489²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 755645121 + 1 = 27489^2 + 1^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 188911279 + ... + 188911282.

Almost surely, 2^755645122 is an apocalyptic number.

755645122 is a deficient number, since it is larger than the sum of its proper divisors (377822564).

755645122 is a wasteful number, since it uses less digits than its factorization.

755645122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377822563.

The product of its digits is 84000, while the sum is 37.

The square root of 755645122 is about 27489.0000181891. Note that the first 4 decimals coincide. The cubic root of 755645122 is about 910.8341271074.

The spelling of 755645122 in words is "seven hundred fifty-five million, six hundred forty-five thousand, one hundred twenty-two".