145778523 has 16 divisors (see below), whose sum is σ = 218883072. Its totient is φ = 85500000.

The previous prime is 145778513. The next prime is 145778527. The reversal of 145778523 is 325877541.

145778523 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 145778523 - 2⁵ = 145778491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145778527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70228 + ... + 72273.

It is an arithmetic number, because the mean of its divisors is an integer number (13680192).

Almost surely, 2^145778523 is an apocalyptic number.

145778523 is a deficient number, since it is larger than the sum of its proper divisors (73104549).

145778523 is a wasteful number, since it uses less digits than its factorization.

145778523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142546.

The product of its digits is 235200, while the sum is 42.

The square root of 145778523 is about 12073.8777118207. The cubic root of 145778523 is about 526.2973483463.

The spelling of 145778523 in words is "one hundred forty-five million, seven hundred seventy-eight thousand, five hundred twenty-three".