147478157 has 2 divisors, whose sum is σ = 147478158. Its totient is φ = 147478156.

The previous prime is 147478109. The next prime is 147478183. The reversal of 147478157 is 751874741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142229476 + 5248681 = 11926^2 + 2291^2 .

It is an emirp because it is prime and its reverse (751874741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 147478157 - 2²² = 143283853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147478187) 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, 73739078 + 73739079.

It is an arithmetic number, because the mean of its divisors is an integer number (73739079).

Almost surely, 2^147478157 is an apocalyptic number.

It is an amenable number.

147478157 is a deficient number, since it is larger than the sum of its proper divisors (1).

147478157 is an equidigital number, since it uses as much as digits as its factorization.

147478157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 219520, while the sum is 44.

The square root of 147478157 is about 12144.0585061173. The cubic root of 147478157 is about 528.3348200148.

The spelling of 147478157 in words is "one hundred forty-seven million, four hundred seventy-eight thousand, one hundred fifty-seven".