132256561 has 2 divisors, whose sum is σ = 132256562. Its totient is φ = 132256560.

The previous prime is 132256547. The next prime is 132256573. The reversal of 132256561 is 165652231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132250000 + 6561 = 11500^2 + 81^2 .

It is a cyclic number.

It is not a de Polignac number, because 132256561 - 2¹⁷ = 132125489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (132256591) 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, 66128280 + 66128281.

It is an arithmetic number, because the mean of its divisors is an integer number (66128281).

Almost surely, 2^132256561 is an apocalyptic number.

It is an amenable number.

132256561 is a deficient number, since it is larger than the sum of its proper divisors (1).

132256561 is an equidigital number, since it uses as much as digits as its factorization.

132256561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 132256561 is about 11500.2852573317. The cubic root of 132256561 is about 509.4940015338.

It can be divided in two parts, 13225 and 6561, that multiplied together give a square (86769225 = 9315²).

The spelling of 132256561 in words is "one hundred thirty-two million, two hundred fifty-six thousand, five hundred sixty-one".