149510545 has 4 divisors (see below), whose sum is σ = 179412660. Its totient is φ = 119608432.

The previous prime is 149510539. The next prime is 149510549. The reversal of 149510545 is 545015941.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545015941 = 1453 ⋅375097.

It can be written as a sum of positive squares in 2 ways, for example, as 69372241 + 80138304 = 8329^2 + 8952^2 .

It is a cyclic number.

It is not a de Polignac number, because 149510545 - 2⁹ = 149510033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149510545.

It is not an unprimeable number, because it can be changed into a prime (149510549) 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, 14951050 + ... + 14951059.

It is an arithmetic number, because the mean of its divisors is an integer number (44853165).

Almost surely, 2^149510545 is an apocalyptic number.

It is an amenable number.

149510545 is a deficient number, since it is larger than the sum of its proper divisors (29902115).

149510545 is an equidigital number, since it uses as much as digits as its factorization.

149510545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29902114.

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 149510545 is about 12227.4504701512. The cubic root of 149510545 is about 530.7507398084.

The spelling of 149510545 in words is "one hundred forty-nine million, five hundred ten thousand, five hundred forty-five".