145115183 has 4 divisors (see below), whose sum is σ = 145245528. Its totient is φ = 144984840.

The previous prime is 145115177. The next prime is 145115207. The reversal of 145115183 is 381511541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145115183 - 2¹⁴ = 145098799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145175183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63488 + ... + 65733.

It is an arithmetic number, because the mean of its divisors is an integer number (36311382).

Almost surely, 2^145115183 is an apocalyptic number.

145115183 is a deficient number, since it is larger than the sum of its proper divisors (130345).

145115183 is a wasteful number, since it uses less digits than its factorization.

145115183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130344.

The product of its digits is 2400, while the sum is 29.

The square root of 145115183 is about 12046.3763431166. The cubic root of 145115183 is about 525.4978593993.

The spelling of 145115183 in words is "one hundred forty-five million, one hundred fifteen thousand, one hundred eighty-three".