1926521 has 2 divisors, whose sum is σ = 1926522. Its totient is φ = 1926520.

The previous prime is 1926493. The next prime is 1926523. The reversal of 1926521 is 1256291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1590121 + 336400 = 1261^2 + 580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1926521 is a prime.

It is a super-2 number, since 2×1926521² = 7422966326882, which contains 22 as substring.

Together with 1926523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1926523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 963260 + 963261.

It is an arithmetic number, because the mean of its divisors is an integer number (963261).

2^1926521 is an apocalyptic number.

It is an amenable number.

1926521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1926521 is an equidigital number, since it uses as much as digits as its factorization.

1926521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 26.

The square root of 1926521 is about 1387.9917146727. The cubic root of 1926521 is about 124.4298513985.

The spelling of 1926521 in words is "one million, nine hundred twenty-six thousand, five hundred twenty-one".