197132581 has 8 divisors (see below), whose sum is σ = 208565280. Its totient is φ = 185805648.

The previous prime is 197132569. The next prime is 197132591. The reversal of 197132581 is 185231791.

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 197132581 - 2⁵ = 197132549 is a prime.

It is a super-2 number, since 2×197132581² = 77722508983443122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 197132581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197132591) 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, 22591 + ... + 30076.

It is an arithmetic number, because the mean of its divisors is an integer number (26070660).

Almost surely, 2^197132581 is an apocalyptic number.

It is an amenable number.

197132581 is a deficient number, since it is larger than the sum of its proper divisors (11432699).

197132581 is a wasteful number, since it uses less digits than its factorization.

197132581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52883.

The product of its digits is 15120, while the sum is 37.

The square root of 197132581 is about 14040.3910558075. The cubic root of 197132581 is about 581.9952891452.

The spelling of 197132581 in words is "one hundred ninety-seven million, one hundred thirty-two thousand, five hundred eighty-one".