126522649 has 4 divisors (see below), whose sum is σ = 138024720. Its totient is φ = 115020580.

The previous prime is 126522631. The next prime is 126522673. The reversal of 126522649 is 946225621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126522649 - 2²³ = 118134041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126525649) 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, 5751019 + ... + 5751040.

It is an arithmetic number, because the mean of its divisors is an integer number (34506180).

Almost surely, 2^126522649 is an apocalyptic number.

It is an amenable number.

126522649 is a deficient number, since it is larger than the sum of its proper divisors (11502071).

126522649 is a wasteful number, since it uses less digits than its factorization.

126522649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11502070.

The product of its digits is 51840, while the sum is 37.

The square root of 126522649 is about 11248.2287050006. The cubic root of 126522649 is about 502.0220105903.

The spelling of 126522649 in words is "one hundred twenty-six million, five hundred twenty-two thousand, six hundred forty-nine".