1922551 has 2 divisors, whose sum is σ = 1922552. Its totient is φ = 1922550.

The previous prime is 1922533. The next prime is 1922561. The reversal of 1922551 is 1552291.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1922551 - 2⁵ = 1922519 is a prime.

1922551 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1922561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961275 + 961276.

It is an arithmetic number, because the mean of its divisors is an integer number (961276).

2^1922551 is an apocalyptic number.

1922551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1922551 is an equidigital number, since it uses as much as digits as its factorization.

1922551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 25.

The square root of 1922551 is about 1386.5608533346. The cubic root of 1922551 is about 124.3443213644.

The spelling of 1922551 in words is "one million, nine hundred twenty-two thousand, five hundred fifty-one".