157987841 has 16 divisors (see below), whose sum is σ = 175838208. Its totient is φ = 140745600.

The previous prime is 157987813. The next prime is 157987847. The reversal of 157987841 is 148789751.

It is not a de Polignac number, because 157987841 - 2²² = 153793537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157987841.

It is not an unprimeable number, because it can be changed into a prime (157987847) 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 15 ways as a sum of consecutive naturals, for example, 144800 + ... + 145886.

It is an arithmetic number, because the mean of its divisors is an integer number (10989888).

Almost surely, 2^157987841 is an apocalyptic number.

157987841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

157987841 is a deficient number, since it is larger than the sum of its proper divisors (17850367).

157987841 is a wasteful number, since it uses less digits than its factorization.

157987841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352.

The product of its digits is 564480, while the sum is 50.

The square root of 157987841 is about 12569.3214216202. The cubic root of 157987841 is about 540.5981494945.

The spelling of 157987841 in words is "one hundred fifty-seven million, nine hundred eighty-seven thousand, eight hundred forty-one".