22751001 has 24 divisors (see below), whose sum is σ = 40447680. Its totient is φ = 12000096.

The previous prime is 22750963. The next prime is 22751009. The reversal of 22751001 is 10015722.

It is not a de Polignac number, because 22751001 - 2⁷ = 22750873 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22751009) 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 23 ways as a sum of consecutive naturals, for example, 13071 + ... + 14708.

It is an arithmetic number, because the mean of its divisors is an integer number (1685320).

Almost surely, 2^22751001 is an apocalyptic number.

22751001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22751001 is a deficient number, since it is larger than the sum of its proper divisors (17696679).

22751001 is a wasteful number, since it uses less digits than its factorization.

22751001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27805 (or 27802 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 22751001 is about 4769.8009392426. The cubic root of 22751001 is about 283.3567111814.

Adding to 22751001 its reverse (10015722), we get a palindrome (32766723).

The spelling of 22751001 in words is "twenty-two million, seven hundred fifty-one thousand, one".