22751506 has 4 divisors (see below), whose sum is σ = 34127262. Its totient is φ = 11375752.

The previous prime is 22751483. The next prime is 22751513. The reversal of 22751506 is 60515722.

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., 14861025 + 7890481 = 3855^2 + 2809^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5687875 + ... + 5687878.

Almost surely, 2^22751506 is an apocalyptic number.

22751506 is a deficient number, since it is larger than the sum of its proper divisors (11375756).

22751506 is a wasteful number, since it uses less digits than its factorization.

22751506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11375755.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 22751506 is about 4769.8538761685. The cubic root of 22751506 is about 283.3588077057.

The spelling of 22751506 in words is "twenty-two million, seven hundred fifty-one thousand, five hundred six".