4192561 has 2 divisors, whose sum is σ = 4192562. Its totient is φ = 4192560.

The previous prime is 4192553. The next prime is 4192567. The reversal of 4192561 is 1652914.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4124961 + 67600 = 2031^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 4192561 - 2³ = 4192553 is a prime.

It is a Chen prime.

4192561 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4192567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2096280 + 2096281.

It is an arithmetic number, because the mean of its divisors is an integer number (2096281).

Almost surely, 2^4192561 is an apocalyptic number.

It is an amenable number.

4192561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4192561 is an equidigital number, since it uses as much as digits as its factorization.

4192561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 28.

The square root of 4192561 is about 2047.5744186720. The cubic root of 4192561 is about 161.2475519930.

It can be divided in two parts, 4192 and 561, that added together give a triangular number (4753 = T₉₇).

The spelling of 4192561 in words is "four million, one hundred ninety-two thousand, five hundred sixty-one".