145201749 has 24 divisors (see below), whose sum is σ = 245687328. Its totient is φ = 75428640.

The previous prime is 145201703. The next prime is 145201759. The reversal of 145201749 is 947102541.

It is a happy number.

145201749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145201749 - 2⁸ = 145201493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145201759) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43282 + ... + 46515.

It is an arithmetic number, because the mean of its divisors is an integer number (10236972).

Almost surely, 2^145201749 is an apocalyptic number.

It is an amenable number.

145201749 is a deficient number, since it is larger than the sum of its proper divisors (100485579).

145201749 is a wasteful number, since it uses less digits than its factorization.

145201749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89825 (or 89818 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 145201749 is about 12049.9688381340. The cubic root of 145201749 is about 525.6023309055.

The spelling of 145201749 in words is "one hundred forty-five million, two hundred one thousand, seven hundred forty-nine".