147621055 has 4 divisors (see below), whose sum is σ = 177145272. Its totient is φ = 118096840.

The previous prime is 147621043. The next prime is 147621077. The reversal of 147621055 is 550126741.

147621055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550126741 = 19 ⋅28954039.

It is not a de Polignac number, because 147621055 - 2⁷ = 147620927 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14762101 + ... + 14762110.

It is an arithmetic number, because the mean of its divisors is an integer number (44286318).

Almost surely, 2^147621055 is an apocalyptic number.

147621055 is a deficient number, since it is larger than the sum of its proper divisors (29524217).

147621055 is an equidigital number, since it uses as much as digits as its factorization.

147621055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29524216.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 147621055 is about 12149.9405348339. The cubic root of 147621055 is about 528.5054071249.

Adding to 147621055 its reverse (550126741), we get a palindrome (697747796).

The spelling of 147621055 in words is "one hundred forty-seven million, six hundred twenty-one thousand, fifty-five".