1951223 has 2 divisors, whose sum is σ = 1951224. Its totient is φ = 1951222.

The previous prime is 1951199. The next prime is 1951237. The reversal of 1951223 is 3221591.

It is a strong prime.

It is an emirp because it is prime and its reverse (3221591) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1951223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1951253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975611 + 975612.

It is an arithmetic number, because the mean of its divisors is an integer number (975612).

2^1951223 is an apocalyptic number.

1951223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1951223 is an equidigital number, since it uses as much as digits as its factorization.

1951223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 23.

The square root of 1951223 is about 1396.8618399828. The cubic root of 1951223 is about 124.9594108216.

The spelling of 1951223 in words is "one million, nine hundred fifty-one thousand, two hundred twenty-three".