22007549 has 8 divisors (see below), whose sum is σ = 22871160. Its totient is φ = 21150976.

The previous prime is 22007539. The next prime is 22007581. The reversal of 22007549 is 94570022.

It can be written as a sum of positive squares in 4 ways, for example, as 4072324 + 17935225 = 2018^2 + 4235^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-22007549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22007539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5129 + ... + 8385.

It is an arithmetic number, because the mean of its divisors is an integer number (2858895).

Almost surely, 2^22007549 is an apocalyptic number.

22007549 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

22007549 is a deficient number, since it is larger than the sum of its proper divisors (863611).

22007549 is a wasteful number, since it uses less digits than its factorization.

22007549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 22007549 is about 4691.2204169065. The cubic root of 22007549 is about 280.2359787867.

The spelling of 22007549 in words is "twenty-two million, seven thousand, five hundred forty-nine".