147645226 has 4 divisors (see below), whose sum is σ = 221467842. Its totient is φ = 73822612.

The previous prime is 147645209. The next prime is 147645229. The reversal of 147645226 is 622546741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 622546741 = 29 ⋅21467129.

It can be written as a sum of positive squares in only one way, i.e., 145082025 + 2563201 = 12045^2 + 1601^2 .

It is a super-2 number, since 2×147645226² = 43598225521182152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (147645229) 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 as a sum of consecutive naturals, namely, 36911305 + ... + 36911308.

Almost surely, 2^147645226 is an apocalyptic number.

147645226 is a deficient number, since it is larger than the sum of its proper divisors (73822616).

147645226 is an equidigital number, since it uses as much as digits as its factorization.

147645226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73822615.

The product of its digits is 80640, while the sum is 37.

The square root of 147645226 is about 12150.9351903465. The cubic root of 147645226 is about 528.5342508131.

The spelling of 147645226 in words is "one hundred forty-seven million, six hundred forty-five thousand, two hundred twenty-six".