149945253 has 16 divisors (see below), whose sum is σ = 212461056. Its totient is φ = 93739520.

The previous prime is 149945231. The next prime is 149945261. The reversal of 149945253 is 352549941.

It is a cyclic number.

It is not a de Polignac number, because 149945253 - 2⁵ = 149945221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149945203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9100 + ... + 19562.

It is an arithmetic number, because the mean of its divisors is an integer number (13278816).

Almost surely, 2^149945253 is an apocalyptic number.

It is an amenable number.

149945253 is a deficient number, since it is larger than the sum of its proper divisors (62515803).

149945253 is a wasteful number, since it uses less digits than its factorization.

149945253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10764.

The product of its digits is 194400, while the sum is 42.

The square root of 149945253 is about 12245.2134730269. The cubic root of 149945253 is about 531.2646352047.

The spelling of 149945253 in words is "one hundred forty-nine million, nine hundred forty-five thousand, two hundred fifty-three".