147220273 has 4 divisors (see below), whose sum is σ = 149998068. Its totient is φ = 144442480.

The previous prime is 147220253. The next prime is 147220277. The reversal of 147220273 is 372022741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 372022741 = 53 ⋅7019297.

It can be written as a sum of positive squares in 2 ways, for example, as 124724224 + 22496049 = 11168^2 + 4743^2 .

It is a cyclic number.

It is not a de Polignac number, because 147220273 - 2¹³ = 147212081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147220277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1388818 + ... + 1388923.

It is an arithmetic number, because the mean of its divisors is an integer number (37499517).

Almost surely, 2^147220273 is an apocalyptic number.

It is an amenable number.

147220273 is a deficient number, since it is larger than the sum of its proper divisors (2777795).

147220273 is an equidigital number, since it uses as much as digits as its factorization.

147220273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777794.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 147220273 is about 12133.4361579892. The cubic root of 147220273 is about 528.0266871746.

The spelling of 147220273 in words is "one hundred forty-seven million, two hundred twenty thousand, two hundred seventy-three".