132581401 has 4 divisors (see below), whose sum is σ = 132931600. Its totient is φ = 132231204.

The previous prime is 132581399. The next prime is 132581503. The reversal of 132581401 is 104185231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 132581401 - 2¹ = 132581399 is a prime.

It is a super-2 number, since 2×132581401² = 35155655782245602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132584401) 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 in 3 ways as a sum of consecutive naturals, for example, 174531 + ... + 175288.

It is an arithmetic number, because the mean of its divisors is an integer number (33232900).

Almost surely, 2^132581401 is an apocalyptic number.

It is an amenable number.

132581401 is a deficient number, since it is larger than the sum of its proper divisors (350199).

132581401 is an equidigital number, since it uses as much as digits as its factorization.

132581401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350198.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 132581401 is about 11514.3997238241. The cubic root of 132581401 is about 509.9107892145.

The spelling of 132581401 in words is "one hundred thirty-two million, five hundred eighty-one thousand, four hundred one".