132537581 has 8 divisors (see below), whose sum is σ = 145726464. Its totient is φ = 119538720.

The previous prime is 132537571. The next prime is 132537611. The reversal of 132537581 is 185735231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 132537581 - 2¹⁴ = 132521197 is a prime.

It is a super-2 number, since 2×132537581² = 35132420754663122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132537551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46040 + ... + 48833.

It is an arithmetic number, because the mean of its divisors is an integer number (18215808).

Almost surely, 2^132537581 is an apocalyptic number.

132537581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

132537581 is a deficient number, since it is larger than the sum of its proper divisors (13188883).

132537581 is a wasteful number, since it uses less digits than its factorization.

132537581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95011.

The product of its digits is 25200, while the sum is 35.

The square root of 132537581 is about 11512.4967318128. The cubic root of 132537581 is about 509.8546054845.

The spelling of 132537581 in words is "one hundred thirty-two million, five hundred thirty-seven thousand, five hundred eighty-one".