22491701 has 4 divisors (see below), whose sum is σ = 22656012. Its totient is φ = 22327392.

The previous prime is 22491683. The next prime is 22491713. The reversal of 22491701 is 10719422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18190225 + 4301476 = 4265^2 + 2074^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22491701 is a prime.

It is a super-2 number, since 2×22491701² = 1011753227746802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22491751) 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, 81950 + ... + 82223.

It is an arithmetic number, because the mean of its divisors is an integer number (5664003).

Almost surely, 2^22491701 is an apocalyptic number.

It is an amenable number.

22491701 is a deficient number, since it is larger than the sum of its proper divisors (164311).

22491701 is a wasteful number, since it uses less digits than its factorization.

22491701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164310.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 22491701 is about 4742.5416181621. The cubic root of 22491701 is about 282.2760948048.

The spelling of 22491701 in words is "twenty-two million, four hundred ninety-one thousand, seven hundred one".