22145601 has 8 divisors (see below), whose sum is σ = 30155904. Its totient is φ = 14449520.

The previous prime is 22145593. The next prime is 22145609. The reversal of 22145601 is 10654122.

It is an interprime number because it is at equal distance from previous prime (22145593) and next prime (22145609).

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

It is a cyclic number.

It is not a de Polignac number, because 22145601 - 2³ = 22145593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22145609) 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 7 ways as a sum of consecutive naturals, for example, 78390 + ... + 78671.

It is an arithmetic number, because the mean of its divisors is an integer number (3769488).

Almost surely, 2^22145601 is an apocalyptic number.

It is an amenable number.

22145601 is a deficient number, since it is larger than the sum of its proper divisors (8010303).

22145601 is a wasteful number, since it uses less digits than its factorization.

22145601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157111.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 22145601 is about 4705.9112826317. The cubic root of 22145601 is about 280.8207254733.

Adding to 22145601 its reverse (10654122), we get a palindrome (32799723).

The spelling of 22145601 in words is "twenty-two million, one hundred forty-five thousand, six hundred one".