43222537 has 2 divisors, whose sum is σ = 43222538. Its totient is φ = 43222536.

The previous prime is 43222519. The next prime is 43222573. The reversal of 43222537 is 73522234.

Together with next prime (43222573) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38638656 + 4583881 = 6216^2 + 2141^2 .

It is a cyclic number.

It is not a de Polignac number, because 43222537 - 2⁷ = 43222409 is a prime.

It is not a weakly prime, because it can be changed into another prime (43222237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21611268 + 21611269.

It is an arithmetic number, because the mean of its divisors is an integer number (21611269).

Almost surely, 2^43222537 is an apocalyptic number.

It is an amenable number.

43222537 is a deficient number, since it is larger than the sum of its proper divisors (1).

43222537 is an equidigital number, since it uses as much as digits as its factorization.

43222537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 28.

The square root of 43222537 is about 6574.3849141954. The cubic root of 43222537 is about 350.9431351888.

It can be divided in two parts, 4322 and 2537, that added together give a cube (6859 = 19³).

The spelling of 43222537 in words is "forty-three million, two hundred twenty-two thousand, five hundred thirty-seven".