148735257 has 24 divisors (see below), whose sum is σ = 219266208. Its totient is φ = 89675520.

The previous prime is 148735231. The next prime is 148735259. The reversal of 148735257 is 752537841.

It is not a de Polignac number, because 148735257 - 2⁸ = 148735001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (148735259) 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, 770553 + ... + 770745.

It is an arithmetic number, because the mean of its divisors is an integer number (9136092).

Almost surely, 2^148735257 is an apocalyptic number.

It is an amenable number.

148735257 is a deficient number, since it is larger than the sum of its proper divisors (70530951).

148735257 is an frugal number, since it uses more digits than its factorization.

148735257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 207 counting only the distinct ones).

The product of its digits is 235200, while the sum is 42.

The square root of 148735257 is about 12195.7064986002. The cubic root of 148735257 is about 529.8317455709.

The spelling of 148735257 in words is "one hundred forty-eight million, seven hundred thirty-five thousand, two hundred fifty-seven".