149006257 has 2 divisors, whose sum is σ = 149006258. Its totient is φ = 149006256.

The previous prime is 149006183. The next prime is 149006261. The reversal of 149006257 is 752600941.

149006257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138274081 + 10732176 = 11759^2 + 3276^2 .

It is a cyclic number.

It is not a de Polignac number, because 149006257 - 2¹⁹ = 148481969 is a prime.

It is not a weakly prime, because it can be changed into another prime (149006657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74503128 + 74503129.

It is an arithmetic number, because the mean of its divisors is an integer number (74503129).

Almost surely, 2^149006257 is an apocalyptic number.

It is an amenable number.

149006257 is a deficient number, since it is larger than the sum of its proper divisors (1).

149006257 is an equidigital number, since it uses as much as digits as its factorization.

149006257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 149006257 is about 12206.8119097494. The cubic root of 149006257 is about 530.1533399911.

The spelling of 149006257 in words is "one hundred forty-nine million, six thousand, two hundred fifty-seven".