149485257 has 20 divisors (see below), whose sum is σ = 233016960. Its totient is φ = 95322744.

The previous prime is 149485253. The next prime is 149485261. The reversal of 149485257 is 752584941.

149485257 is a `hidden beast` number, since 149 + 485 + 25 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (149485253) and next prime (149485261).

It is not a de Polignac number, because 149485257 - 2² = 149485253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149485253) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 38257 + ... + 41982.

It is an arithmetic number, because the mean of its divisors is an integer number (11650848).

Almost surely, 2^149485257 is an apocalyptic number.

It is an amenable number.

149485257 is a deficient number, since it is larger than the sum of its proper divisors (83531703).

149485257 is an equidigital number, since it uses as much as digits as its factorization.

149485257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80274 (or 80265 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 149485257 is about 12226.4163596697. The cubic root of 149485257 is about 530.7208146472.

The spelling of 149485257 in words is "one hundred forty-nine million, four hundred eighty-five thousand, two hundred fifty-seven".