149006261 has 2 divisors, whose sum is σ = 149006262. Its totient is φ = 149006260.

The previous prime is 149006257. The next prime is 149006317. The reversal of 149006261 is 162600941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88943761 + 60062500 = 9431^2 + 7750^2 .

It is a cyclic number.

It is not a de Polignac number, because 149006261 - 2² = 149006257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149006761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74503130 + 74503131.

It is an arithmetic number, because the mean of its divisors is an integer number (74503131).

Almost surely, 2^149006261 is an apocalyptic number.

It is an amenable number.

149006261 is a deficient number, since it is larger than the sum of its proper divisors (1).

149006261 is an equidigital number, since it uses as much as digits as its factorization.

149006261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 149006261 is about 12206.8120735924. The cubic root of 149006261 is about 530.1533447350.

The spelling of 149006261 in words is "one hundred forty-nine million, six thousand, two hundred sixty-one".