22749501 has 12 divisors (see below), whose sum is σ = 30775488. Its totient is φ = 14948064.

The previous prime is 22749497. The next prime is 22749511. The reversal of 22749501 is 10594722.

It is not a de Polignac number, because 22749501 - 2² = 22749497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22749511) 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 11 ways as a sum of consecutive naturals, for example, 15276 + ... + 16698.

It is an arithmetic number, because the mean of its divisors is an integer number (2564624).

Almost surely, 2^22749501 is an apocalyptic number.

It is an amenable number.

22749501 is a deficient number, since it is larger than the sum of its proper divisors (8025987).

22749501 is an equidigital number, since it uses as much as digits as its factorization.

22749501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572 (or 1499 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 22749501 is about 4769.6436973845. The cubic root of 22749501 is about 283.3504836985.

The spelling of 22749501 in words is "twenty-two million, seven hundred forty-nine thousand, five hundred one".