147955561 has 16 divisors (see below), whose sum is σ = 165753280. Its totient is φ = 131181120.

The previous prime is 147955559. The next prime is 147955567. The reversal of 147955561 is 165559741.

It is a cyclic number.

It is not a de Polignac number, because 147955561 - 2¹ = 147955559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147955567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31930 + ... + 36268.

It is an arithmetic number, because the mean of its divisors is an integer number (10359580).

Almost surely, 2^147955561 is an apocalyptic number.

It is an amenable number.

147955561 is a deficient number, since it is larger than the sum of its proper divisors (17797719).

147955561 is a wasteful number, since it uses less digits than its factorization.

147955561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4456.

The product of its digits is 189000, while the sum is 43.

The square root of 147955561 is about 12163.6984918239. The cubic root of 147955561 is about 528.9042997825.

The spelling of 147955561 in words is "one hundred forty-seven million, nine hundred fifty-five thousand, five hundred sixty-one".