147561 has 8 divisors (see below), whose sum is σ = 199104. Its totient is φ = 97200.

The previous prime is 147557. The next prime is 147571. The reversal of 147561 is 165741.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 147561 - 2² = 147557 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 147561.

It is not an unprimeable number, because it can be changed into a prime (147541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60 + ... + 546.

It is an arithmetic number, because the mean of its divisors is an integer number (24888).

2¹⁴⁷⁵⁶¹ is an apocalyptic number.

It is an amenable number.

147561 is a deficient number, since it is larger than the sum of its proper divisors (51543).

147561 is a wasteful number, since it uses less digits than its factorization.

147561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591.

The product of its digits is 840, while the sum is 24.

The square root of 147561 is about 384.1366944201. The cubic root of 147561 is about 52.8433728783.

The spelling of 147561 in words is "one hundred forty-seven thousand, five hundred sixty-one".