22615545 has 16 divisors (see below), whose sum is σ = 36352512. Its totient is φ = 12005760.

The previous prime is 22615543. The next prime is 22615553. The reversal of 22615545 is 54551622.

It is not a de Polignac number, because 22615545 - 2¹ = 22615543 is a prime.

It is a super-2 number, since 2×22615545² = 1022925751294050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22615543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36 + ... + 6725.

It is an arithmetic number, because the mean of its divisors is an integer number (2272032).

Almost surely, 2^22615545 is an apocalyptic number.

It is an amenable number.

22615545 is a deficient number, since it is larger than the sum of its proper divisors (13736967).

22615545 is a wasteful number, since it uses less digits than its factorization.

22615545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6992.

The product of its digits is 12000, while the sum is 30.

The square root of 22615545 is about 4755.5804062175. The cubic root of 22615545 is about 282.7932371626.

The spelling of 22615545 in words is "twenty-two million, six hundred fifteen thousand, five hundred forty-five".