1952221 has 2 divisors, whose sum is σ = 1952222. Its totient is φ = 1952220.

The previous prime is 1952219. The next prime is 1952227. The reversal of 1952221 is 1222591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1726596 + 225625 = 1314^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 1952221 - 2¹ = 1952219 is a prime.

It is a super-2 number, since 2×1952221² = 7622333665682, which contains 22 as substring.

Together with 1952219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1952192 and 1952201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1952227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976110 + 976111.

It is an arithmetic number, because the mean of its divisors is an integer number (976111).

2^1952221 is an apocalyptic number.

It is an amenable number.

1952221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1952221 is an equidigital number, since it uses as much as digits as its factorization.

1952221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 22.

The square root of 1952221 is about 1397.2190236323. The cubic root of 1952221 is about 124.9807116905.

The spelling of 1952221 in words is "one million, nine hundred fifty-two thousand, two hundred twenty-one".