132071581 has 2 divisors, whose sum is σ = 132071582. Its totient is φ = 132071580.

The previous prime is 132071507. The next prime is 132071609. The reversal of 132071581 is 185170231.

It is an a-pointer prime, because the next prime (132071609) can be obtained adding 132071581 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114682681 + 17388900 = 10709^2 + 4170^2 .

It is an emirp because it is prime and its reverse (185170231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 132071581 - 2²⁵ = 98517149 is a prime.

It is a super-2 number, since 2×132071581² = 34885805015679122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132071281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66035790 + 66035791.

It is an arithmetic number, because the mean of its divisors is an integer number (66035791).

Almost surely, 2^132071581 is an apocalyptic number.

It is an amenable number.

132071581 is a deficient number, since it is larger than the sum of its proper divisors (1).

132071581 is an equidigital number, since it uses as much as digits as its factorization.

132071581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 132071581 is about 11492.2400340404. The cubic root of 132071581 is about 509.2563569314.

The spelling of 132071581 in words is "one hundred thirty-two million, seventy-one thousand, five hundred eighty-one".