22512047 has 2 divisors, whose sum is σ = 22512048. Its totient is φ = 22512046.

The previous prime is 22512019. The next prime is 22512053. The reversal of 22512047 is 74021522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22512047 - 2¹⁰ = 22511023 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22512247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11256023 + 11256024.

It is an arithmetic number, because the mean of its divisors is an integer number (11256024).

Almost surely, 2^22512047 is an apocalyptic number.

22512047 is a deficient number, since it is larger than the sum of its proper divisors (1).

22512047 is an equidigital number, since it uses as much as digits as its factorization.

22512047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 22512047 is about 4744.6861856186. The cubic root of 22512047 is about 282.3611848347.

Adding to 22512047 its reverse (74021522), we get a palindrome (96533569).

The spelling of 22512047 in words is "twenty-two million, five hundred twelve thousand, forty-seven".