22574381 has 2 divisors, whose sum is σ = 22574382. Its totient is φ = 22574380.

The previous prime is 22574371. The next prime is 22574389. The reversal of 22574381 is 18347522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22562500 + 11881 = 4750^2 + 109^2 .

It is a cyclic number.

It is not a de Polignac number, because 22574381 - 2¹⁰ = 22573357 is a prime.

It is a super-2 number, since 2×22574381² = 1019205355066322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22574389) 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, 11287190 + 11287191.

It is an arithmetic number, because the mean of its divisors is an integer number (11287191).

Almost surely, 2^22574381 is an apocalyptic number.

It is an amenable number.

22574381 is a deficient number, since it is larger than the sum of its proper divisors (1).

22574381 is an equidigital number, since it uses as much as digits as its factorization.

22574381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 32.

The square root of 22574381 is about 4751.2504669824. The cubic root of 22574381 is about 282.6215562716.

The spelling of 22574381 in words is "twenty-two million, five hundred seventy-four thousand, three hundred eighty-one".