82227491 has 2 divisors, whose sum is σ = 82227492. Its totient is φ = 82227490.

The previous prime is 82227479. The next prime is 82227511. The reversal of 82227491 is 19472228.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82227491 - 2²² = 78033187 is a prime.

It is a super-2 number, since 2×82227491² = 13522720552310162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82247491) 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, 41113745 + 41113746.

It is an arithmetic number, because the mean of its divisors is an integer number (41113746).

Almost surely, 2^82227491 is an apocalyptic number.

82227491 is a deficient number, since it is larger than the sum of its proper divisors (1).

82227491 is an equidigital number, since it uses as much as digits as its factorization.

82227491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

The square root of 82227491 is about 9067.9375273543. The cubic root of 82227491 is about 434.8495379570.

The spelling of 82227491 in words is "eighty-two million, two hundred twenty-seven thousand, four hundred ninety-one".