148670257 has 2 divisors, whose sum is σ = 148670258. Its totient is φ = 148670256.

The previous prime is 148670233. The next prime is 148670279. The reversal of 148670257 is 752076841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109181601 + 39488656 = 10449^2 + 6284^2 .

It is an emirp because it is prime and its reverse (752076841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 148670257 - 2¹¹ = 148668209 is a prime.

It is not a weakly prime, because it can be changed into another prime (148670297) 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, 74335128 + 74335129.

It is an arithmetic number, because the mean of its divisors is an integer number (74335129).

Almost surely, 2^148670257 is an apocalyptic number.

It is an amenable number.

148670257 is a deficient number, since it is larger than the sum of its proper divisors (1).

148670257 is an equidigital number, since it uses as much as digits as its factorization.

148670257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 148670257 is about 12193.0413351223. The cubic root of 148670257 is about 529.7545523032.

The spelling of 148670257 in words is "one hundred forty-eight million, six hundred seventy thousand, two hundred fifty-seven".