149257 has 2 divisors, whose sum is σ = 149258. Its totient is φ = 149256.

The previous prime is 149251. The next prime is 149269. The reversal of 149257 is 752941.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145161 + 4096 = 381^2 + 64^2 .

It is a cyclic number.

It is not a de Polignac number, because 149257 - 2³ = 149249 is a prime.

It is not a weakly prime, because it can be changed into another prime (149251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74628 + 74629.

It is an arithmetic number, because the mean of its divisors is an integer number (74629).

2¹⁴⁹²⁵⁷ is an apocalyptic number.

It is an amenable number.

149257 is a deficient number, since it is larger than the sum of its proper divisors (1).

149257 is an equidigital number, since it uses as much as digits as its factorization.

149257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 28.

The square root of 149257 is about 386.3379349740. The cubic root of 149257 is about 53.0450548414.

It can be divided in two parts, 149 and 257, that added together give a triangular number (406 = T₂₈).

The spelling of 149257 in words is "one hundred forty-nine thousand, two hundred fifty-seven".