1972207 has 2 divisors, whose sum is σ = 1972208. Its totient is φ = 1972206.

The previous prime is 1972177. The next prime is 1972231. The reversal of 1972207 is 7022791.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7022791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1972207 - 2⁷ = 1972079 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1972247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986103 + 986104.

It is an arithmetic number, because the mean of its divisors is an integer number (986104).

2^1972207 is an apocalyptic number.

1972207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972207 is an equidigital number, since it uses as much as digits as its factorization.

1972207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 1972207 is about 1404.3528758827. The cubic root of 1972207 is about 125.4057640855.

Adding to 1972207 its reverse (7022791), we get a palindrome (8994998).

The spelling of 1972207 in words is "one million, nine hundred seventy-two thousand, two hundred seven".