145249713 has 32 divisors (see below), whose sum is σ = 246528000. Its totient is φ = 82796688.

The previous prime is 145249697. The next prime is 145249721. The reversal of 145249713 is 317942541.

It is not a de Polignac number, because 145249713 - 2⁴ = 145249697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145249763) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112570 + ... + 113852.

It is an arithmetic number, because the mean of its divisors is an integer number (7704000).

Almost surely, 2^145249713 is an apocalyptic number.

It is an amenable number.

145249713 is a deficient number, since it is larger than the sum of its proper divisors (101278287).

145249713 is a wasteful number, since it uses less digits than its factorization.

145249713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1892 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 145249713 is about 12051.9588864217. The cubic root of 145249713 is about 525.6601980112.

The spelling of 145249713 in words is "one hundred forty-five million, two hundred forty-nine thousand, seven hundred thirteen".