22751761 has 12 divisors (see below), whose sum is σ = 24387300. Its totient is φ = 21211520.

The previous prime is 22751723. The next prime is 22751767. The reversal of 22751761 is 16715722.

It can be written as a sum of positive squares in 2 ways, for example, as 10368400 + 12383361 = 3220^2 + 3519^2 .

It is not a de Polignac number, because 22751761 - 2⁹ = 22751249 is a prime.

It is a super-2 number, since 2×22751761² = 1035285257202242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22751767) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 21165 + ... + 22213.

It is an arithmetic number, because the mean of its divisors is an integer number (2032275).

Almost surely, 2^22751761 is an apocalyptic number.

It is an amenable number.

22751761 is a deficient number, since it is larger than the sum of its proper divisors (1635539).

22751761 is a wasteful number, since it uses less digits than its factorization.

22751761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136 (or 1113 counting only the distinct ones).

The product of its digits is 5880, while the sum is 31.

The square root of 22751761 is about 4769.8806064722. The cubic root of 22751761 is about 283.3598663349.

The spelling of 22751761 in words is "twenty-two million, seven hundred fifty-one thousand, seven hundred sixty-one".