147748157 has 2 divisors, whose sum is σ = 147748158. Its totient is φ = 147748156.

The previous prime is 147748151. The next prime is 147748187. The reversal of 147748157 is 751847741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145419481 + 2328676 = 12059^2 + 1526^2 .

It is an emirp because it is prime and its reverse (751847741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 147748157 - 2¹⁰ = 147747133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147748151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73874078 + 73874079.

It is an arithmetic number, because the mean of its divisors is an integer number (73874079).

Almost surely, 2^147748157 is an apocalyptic number.

It is an amenable number.

147748157 is a deficient number, since it is larger than the sum of its proper divisors (1).

147748157 is an equidigital number, since it uses as much as digits as its factorization.

147748157 is an evil number, because the sum of its binary digits is even.

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

The square root of 147748157 is about 12155.1699700169. The cubic root of 147748157 is about 528.6570449891.

The spelling of 147748157 in words is "one hundred forty-seven million, seven hundred forty-eight thousand, one hundred fifty-seven".