149590257 has 4 divisors (see below), whose sum is σ = 199453680. Its totient is φ = 99726836.

The previous prime is 149590253. The next prime is 149590279. The reversal of 149590257 is 752095941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 752095941 = 3 ⋅250698647.

It is a cyclic number.

It is not a de Polignac number, because 149590257 - 2² = 149590253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149590253) 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 3 ways as a sum of consecutive naturals, for example, 24931707 + ... + 24931712.

It is an arithmetic number, because the mean of its divisors is an integer number (49863420).

Almost surely, 2^149590257 is an apocalyptic number.

It is an amenable number.

149590257 is a deficient number, since it is larger than the sum of its proper divisors (49863423).

149590257 is an equidigital number, since it uses as much as digits as its factorization.

149590257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49863422.

The product of its (nonzero) digits is 113400, while the sum is 42.

The square root of 149590257 is about 12230.7095869373. The cubic root of 149590257 is about 530.8450468387.

The spelling of 149590257 in words is "one hundred forty-nine million, five hundred ninety thousand, two hundred fifty-seven".