141555521 has 2 divisors, whose sum is σ = 141555522. Its totient is φ = 141555520.

The previous prime is 141555503. The next prime is 141555539. The reversal of 141555521 is 125555141.

It is a balanced prime because it is at equal distance from previous prime (141555503) and next prime (141555539).

It can be written as a sum of positive squares in only one way, i.e., 140754496 + 801025 = 11864^2 + 895^2 .

It is a cyclic number.

It is not a de Polignac number, because 141555521 - 2⁶ = 141555457 is a prime.

It is not a weakly prime, because it can be changed into another prime (141555581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70777760 + 70777761.

It is an arithmetic number, because the mean of its divisors is an integer number (70777761).

Almost surely, 2^141555521 is an apocalyptic number.

It is an amenable number.

141555521 is a deficient number, since it is larger than the sum of its proper divisors (1).

141555521 is an equidigital number, since it uses as much as digits as its factorization.

141555521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5000, while the sum is 29.

The square root of 141555521 is about 11897.7107461898. The cubic root of 141555521 is about 521.1654346228.

The spelling of 141555521 in words is "one hundred forty-one million, five hundred fifty-five thousand, five hundred twenty-one".