22136461 has 4 divisors (see below), whose sum is σ = 22148800. Its totient is φ = 22124124.

The previous prime is 22136459. The next prime is 22136479. The reversal of 22136461 is 16463122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22136461 - 2¹ = 22136459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22136161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2901 + ... + 7258.

It is an arithmetic number, because the mean of its divisors is an integer number (5537200).

Almost surely, 2^22136461 is an apocalyptic number.

It is an amenable number.

22136461 is a deficient number, since it is larger than the sum of its proper divisors (12339).

22136461 is a wasteful number, since it uses less digits than its factorization.

22136461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12338.

The product of its digits is 1728, while the sum is 25.

The square root of 22136461 is about 4704.9400633802. The cubic root of 22136461 is about 280.7820864282.

Adding to 22136461 its reverse (16463122), we get a palindrome (38599583).

The spelling of 22136461 in words is "twenty-two million, one hundred thirty-six thousand, four hundred sixty-one".