147731975 has 24 divisors (see below), whose sum is σ = 187249920. Its totient is φ = 115596000.

The previous prime is 147731971. The next prime is 147731977. The reversal of 147731975 is 579137741.

It is a happy number.

It is not a de Polignac number, because 147731975 - 2² = 147731971 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147731971) 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 23 ways as a sum of consecutive naturals, for example, 258440 + ... + 259010.

It is an arithmetic number, because the mean of its divisors is an integer number (7802080).

Almost surely, 2^147731975 is an apocalyptic number.

147731975 is a deficient number, since it is larger than the sum of its proper divisors (39517945).

147731975 is a wasteful number, since it uses less digits than its factorization.

147731975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 786 counting only the distinct ones).

The product of its digits is 185220, while the sum is 44.

The square root of 147731975 is about 12154.5043091029. The cubic root of 147731975 is about 528.6377440362.

The spelling of 147731975 in words is "one hundred forty-seven million, seven hundred thirty-one thousand, nine hundred seventy-five".