2220497 has 2 divisors, whose sum is σ = 2220498. Its totient is φ = 2220496.

The previous prime is 2220479. The next prime is 2220503. The reversal of 2220497 is 7940222.

Together with previous prime (2220479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2027776 + 192721 = 1424^2 + 439^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220497 - 2²⁰ = 1171921 is a prime.

It is not a weakly prime, because it can be changed into another prime (2220457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110248 + 1110249.

It is an arithmetic number, because the mean of its divisors is an integer number (1110249).

2^2220497 is an apocalyptic number.

It is an amenable number.

2220497 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220497 is an equidigital number, since it uses as much as digits as its factorization.

2220497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 2220497 is about 1490.1332155214. The cubic root of 2220497 is about 130.4618092128.

The spelling of 2220497 in words is "two million, two hundred twenty thousand, four hundred ninety-seven".