141581897 has 4 divisors (see below), whose sum is σ = 145035156. Its totient is φ = 138128640.

The previous prime is 141581873. The next prime is 141581911. The reversal of 141581897 is 798185141.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8202496 + 133379401 = 2864^2 + 11549^2 .

It is a cyclic number.

It is not a de Polignac number, because 141581897 - 2⁸ = 141581641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141581807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1726568 + ... + 1726649.

It is an arithmetic number, because the mean of its divisors is an integer number (36258789).

Almost surely, 2^141581897 is an apocalyptic number.

It is an amenable number.

141581897 is a deficient number, since it is larger than the sum of its proper divisors (3453259).

141581897 is an equidigital number, since it uses as much as digits as its factorization.

141581897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453258.

The product of its digits is 80640, while the sum is 44.

The square root of 141581897 is about 11898.8191430915. The cubic root of 141581897 is about 521.1978021483.

The spelling of 141581897 in words is "one hundred forty-one million, five hundred eighty-one thousand, eight hundred ninety-seven".