141550561 has 12 divisors (see below), whose sum is σ = 145645500. Its totient is φ = 137557440.

The previous prime is 141550559. The next prime is 141550597. The reversal of 141550561 is 165055141.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 19580625 + 121969936 = 4425^2 + 11044^2 .

It is not a de Polignac number, because 141550561 - 2¹ = 141550559 is a prime.

It is a super-2 number, since 2×141550561² = 40073122638829442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141550261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405415 + ... + 405763.

It is an arithmetic number, because the mean of its divisors is an integer number (12137125).

Almost surely, 2^141550561 is an apocalyptic number.

It is an amenable number.

141550561 is a deficient number, since it is larger than the sum of its proper divisors (4094939).

141550561 is an equidigital number, since it uses as much as digits as its factorization.

141550561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 141550561 is about 11897.5023009033. The cubic root of 141550561 is about 521.1593474688.

The spelling of 141550561 in words is "one hundred forty-one million, five hundred fifty thousand, five hundred sixty-one".