147827561 has 24 divisors (see below), whose sum is σ = 178649856. Its totient is φ = 121836960.

The previous prime is 147827551. The next prime is 147827599. The reversal of 147827561 is 165728741.

It is not a de Polignac number, because 147827561 - 2⁶ = 147827497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147827501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 466175 + ... + 466491.

It is an arithmetic number, because the mean of its divisors is an integer number (7443744).

Almost surely, 2^147827561 is an apocalyptic number.

It is an amenable number.

147827561 is a deficient number, since it is larger than the sum of its proper divisors (30822295).

147827561 is a wasteful number, since it uses less digits than its factorization.

147827561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 662 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 147827561 is about 12158.4357957757. The cubic root of 147827561 is about 528.7517330654.

The spelling of 147827561 in words is "one hundred forty-seven million, eight hundred twenty-seven thousand, five hundred sixty-one".