22361954 has 4 divisors (see below), whose sum is σ = 33542934. Its totient is φ = 11180976.

The previous prime is 22361951. The next prime is 22361971. The reversal of 22361954 is 45916322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45916322 = 2 ⋅22958161.

It can be written as a sum of positive squares in only one way, i.e., 22306729 + 55225 = 4723^2 + 235^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22361954.

It is not an unprimeable number, because it can be changed into a prime (22361951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5590487 + ... + 5590490.

Almost surely, 2^22361954 is an apocalyptic number.

22361954 is a deficient number, since it is larger than the sum of its proper divisors (11180980).

22361954 is a wasteful number, since it uses less digits than its factorization.

22361954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11180979.

The product of its digits is 12960, while the sum is 32.

The square root of 22361954 is about 4728.8427759865. The cubic root of 22361954 is about 281.7322626928.

The spelling of 22361954 in words is "twenty-two million, three hundred sixty-one thousand, nine hundred fifty-four".