22941481 has 2 divisors, whose sum is σ = 22941482. Its totient is φ = 22941480.

The previous prime is 22941473. The next prime is 22941487. The reversal of 22941481 is 18414922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16646400 + 6295081 = 4080^2 + 2509^2 .

It is a cyclic number.

It is not a de Polignac number, because 22941481 - 2³ = 22941473 is a prime.

It is a super-2 number, since 2×22941481² = 1052623100946722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22941487) 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, 11470740 + 11470741.

It is an arithmetic number, because the mean of its divisors is an integer number (11470741).

Almost surely, 2^22941481 is an apocalyptic number.

It is an amenable number.

22941481 is a deficient number, since it is larger than the sum of its proper divisors (1).

22941481 is an equidigital number, since it uses as much as digits as its factorization.

22941481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 31.

The square root of 22941481 is about 4789.7266101522. The cubic root of 22941481 is about 284.1453043723.

The spelling of 22941481 in words is "twenty-two million, nine hundred forty-one thousand, four hundred eighty-one".