132857561 has 2 divisors, whose sum is σ = 132857562. Its totient is φ = 132857560.

The previous prime is 132857503. The next prime is 132857581. The reversal of 132857561 is 165758231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125328025 + 7529536 = 11195^2 + 2744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-132857561 is a prime.

It is a super-2 number, since 2×132857561² = 35302263029737442, which contains 22 as substring.

It is a Chen prime.

It is equal to p_7530977 and since 132857561 and 7530977 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (132857581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66428780 + 66428781.

It is an arithmetic number, because the mean of its divisors is an integer number (66428781).

Almost surely, 2^132857561 is an apocalyptic number.

It is an amenable number.

132857561 is a deficient number, since it is larger than the sum of its proper divisors (1).

132857561 is an equidigital number, since it uses as much as digits as its factorization.

132857561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 38.

The square root of 132857561 is about 11526.3854264900. The cubic root of 132857561 is about 510.2645826930.

The spelling of 132857561 in words is "one hundred thirty-two million, eight hundred fifty-seven thousand, five hundred sixty-one".