145653999 has 8 divisors (see below), whose sum is σ = 194287152. Its totient is φ = 97061760.

The previous prime is 145653973. The next prime is 145654013. The reversal of 145653999 is 999356541.

145653999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145653999 - 2⁵ = 145653967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145653919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634 + ... + 17079.

It is an arithmetic number, because the mean of its divisors is an integer number (24285894).

Almost surely, 2^145653999 is an apocalyptic number.

145653999 is a deficient number, since it is larger than the sum of its proper divisors (48633153).

145653999 is a wasteful number, since it uses less digits than its factorization.

145653999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20457.

The product of its digits is 1312200, while the sum is 51.

The square root of 145653999 is about 12068.7198575491. The cubic root of 145653999 is about 526.1474512765.

It can be divided in two parts, 1456 and 53999, that added together give a palindrome (55455).

The spelling of 145653999 in words is "one hundred forty-five million, six hundred fifty-three thousand, nine hundred ninety-nine".