141887521 has 2 divisors, whose sum is σ = 141887522. Its totient is φ = 141887520.

The previous prime is 141887513. The next prime is 141887531. The reversal of 141887521 is 125788141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117483921 + 24403600 = 10839^2 + 4940^2 .

It is a cyclic number.

It is not a de Polignac number, because 141887521 - 2³ = 141887513 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (141887531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70943760 + 70943761.

It is an arithmetic number, because the mean of its divisors is an integer number (70943761).

Almost surely, 2^141887521 is an apocalyptic number.

It is an amenable number.

141887521 is a deficient number, since it is larger than the sum of its proper divisors (1).

141887521 is an equidigital number, since it uses as much as digits as its factorization.

141887521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 37.

The square root of 141887521 is about 11911.6548388543. The cubic root of 141887521 is about 521.5725583397.

The spelling of 141887521 in words is "one hundred forty-one million, eight hundred eighty-seven thousand, five hundred twenty-one".