141558991 has 12 divisors (see below), whose sum is σ = 164906928. Its totient is φ = 121162272.

The previous prime is 141558973. The next prime is 141559013. The reversal of 141558991 is 199855141.

It is not a de Polignac number, because 141558991 - 2⁵ = 141558959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141558931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41835 + ... + 45091.

It is an arithmetic number, because the mean of its divisors is an integer number (13742244).

Almost surely, 2^141558991 is an apocalyptic number.

141558991 is a deficient number, since it is larger than the sum of its proper divisors (23347937).

141558991 is an equidigital number, since it uses as much as digits as its factorization.

141558991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158 (or 4151 counting only the distinct ones).

The product of its digits is 64800, while the sum is 43.

The square root of 141558991 is about 11897.8565716687. The cubic root of 141558991 is about 521.1696930915.

It can be divided in two parts, 1415 and 58991, that added together give a palindrome (60406).

The spelling of 141558991 in words is "one hundred forty-one million, five hundred fifty-eight thousand, nine hundred ninety-one".