22552477 has 2 divisors, whose sum is σ = 22552478. Its totient is φ = 22552476.

The previous prime is 22552457. The next prime is 22552559. The reversal of 22552477 is 77425522.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19766916 + 2785561 = 4446^2 + 1669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22552477 is a prime.

It is a super-2 number, since 2×22552477² = 1017228437671058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22552417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11276238 + 11276239.

It is an arithmetic number, because the mean of its divisors is an integer number (11276239).

Almost surely, 2^22552477 is an apocalyptic number.

It is an amenable number.

22552477 is a deficient number, since it is larger than the sum of its proper divisors (1).

22552477 is an equidigital number, since it uses as much as digits as its factorization.

22552477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39200, while the sum is 34.

The square root of 22552477 is about 4748.9448301702. The cubic root of 22552477 is about 282.5301171327.

Adding to 22552477 its reverse (77425522), we get a palindrome (99977999).

The spelling of 22552477 in words is "twenty-two million, five hundred fifty-two thousand, four hundred seventy-seven".