22487473 has 2 divisors, whose sum is σ = 22487474. Its totient is φ = 22487472.

The previous prime is 22487471. The next prime is 22487483. The reversal of 22487473 is 37478422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20493729 + 1993744 = 4527^2 + 1412^2 .

It is a cyclic number.

It is not a de Polignac number, because 22487473 - 2¹ = 22487471 is a prime.

Together with 22487471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22487471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11243736 + 11243737.

It is an arithmetic number, because the mean of its divisors is an integer number (11243737).

Almost surely, 2^22487473 is an apocalyptic number.

It is an amenable number.

22487473 is a deficient number, since it is larger than the sum of its proper divisors (1).

22487473 is an equidigital number, since it uses as much as digits as its factorization.

22487473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 37.

The square root of 22487473 is about 4742.0958446662. The cubic root of 22487473 is about 282.2584062343.

The spelling of 22487473 in words is "twenty-two million, four hundred eighty-seven thousand, four hundred seventy-three".