126522745 has 4 divisors (see below), whose sum is σ = 151827300. Its totient is φ = 101218192.

The previous prime is 126522677. The next prime is 126522787. The reversal of 126522745 is 547225621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547225621 = 29 ⋅18869849.

It can be written as a sum of positive squares in 2 ways, for example, as 59151481 + 67371264 = 7691^2 + 8208^2 .

It is a cyclic number.

It is not a de Polignac number, because 126522745 - 2⁹ = 126522233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126522745.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12652270 + ... + 12652279.

It is an arithmetic number, because the mean of its divisors is an integer number (37956825).

Almost surely, 2^126522745 is an apocalyptic number.

It is an amenable number.

126522745 is a deficient number, since it is larger than the sum of its proper divisors (25304555).

126522745 is an equidigital number, since it uses as much as digits as its factorization.

126522745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25304554.

The product of its digits is 33600, while the sum is 34.

The square root of 126522745 is about 11248.2329723384. The cubic root of 126522745 is about 502.0221375612.

The spelling of 126522745 in words is "one hundred twenty-six million, five hundred twenty-two thousand, seven hundred forty-five".