145649875 has 16 divisors (see below), whose sum is σ = 207739584. Its totient is φ = 99873600.

The previous prime is 145649857. The next prime is 145649909. The reversal of 145649875 is 578946541.

It is a happy number.

145649875 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 145649875 - 2⁵ = 145649843 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82354 + ... + 84103.

It is an arithmetic number, because the mean of its divisors is an integer number (12983724).

Almost surely, 2^145649875 is an apocalyptic number.

145649875 is a deficient number, since it is larger than the sum of its proper divisors (62089709).

145649875 is an equidigital number, since it uses as much as digits as its factorization.

145649875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166479 (or 166469 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

The square root of 145649875 is about 12068.5490014334. The cubic root of 145649875 is about 526.1424855069.

The spelling of 145649875 in words is "one hundred forty-five million, six hundred forty-nine thousand, eight hundred seventy-five".