22315655 has 8 divisors (see below), whose sum is σ = 27156384. Its totient is φ = 17600800.

The previous prime is 22315651. The next prime is 22315663. The reversal of 22315655 is 55651322.

It is a happy number.

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

It is not a de Polignac number, because 22315655 - 2² = 22315651 is a prime.

It is a super-3 number, since 3×22315655³ (a number of 23 digits) contains 333 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 (22315651) 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, 31076 + ... + 31785.

It is an arithmetic number, because the mean of its divisors is an integer number (3394548).

Almost surely, 2^22315655 is an apocalyptic number.

22315655 is a deficient number, since it is larger than the sum of its proper divisors (4840729).

22315655 is an equidigital number, since it uses as much as digits as its factorization.

22315655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62937.

The product of its digits is 9000, while the sum is 29.

The square root of 22315655 is about 4723.9448557323. The cubic root of 22315655 is about 281.5376921199.

Adding to 22315655 its reverse (55651322), we get a palindrome (77966977).

The spelling of 22315655 in words is "twenty-two million, three hundred fifteen thousand, six hundred fifty-five".