22405455 has 12 divisors (see below), whose sum is σ = 38836200. Its totient is φ = 11949552.

The previous prime is 22405441. The next prime is 22405459. The reversal of 22405455 is 55450422.

It is not a de Polignac number, because 22405455 - 2¹⁴ = 22389071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22405459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248905 + ... + 248994.

It is an arithmetic number, because the mean of its divisors is an integer number (3236350).

Almost surely, 2^22405455 is an apocalyptic number.

22405455 is a deficient number, since it is larger than the sum of its proper divisors (16430745).

22405455 is a wasteful number, since it uses less digits than its factorization.

22405455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497910 (or 497907 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 22405455 is about 4733.4400809559. The cubic root of 22405455 is about 281.9148301721.

Adding to 22405455 its reverse (55450422), we get a palindrome (77855877).

The spelling of 22405455 in words is "twenty-two million, four hundred five thousand, four hundred fifty-five".