145752523 has 4 divisors (see below), whose sum is σ = 166574320. Its totient is φ = 124930728.

The previous prime is 145752473. The next prime is 145752527. The reversal of 145752523 is 325257541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145752523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145752527) 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, 10410888 + ... + 10410901.

It is an arithmetic number, because the mean of its divisors is an integer number (41643580).

Almost surely, 2^145752523 is an apocalyptic number.

145752523 is a deficient number, since it is larger than the sum of its proper divisors (20821797).

145752523 is an equidigital number, since it uses as much as digits as its factorization.

145752523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20821796.

The product of its digits is 42000, while the sum is 34.

The square root of 145752523 is about 12072.8009591809. The cubic root of 145752523 is about 526.2660576267.

The spelling of 145752523 in words is "one hundred forty-five million, seven hundred fifty-two thousand, five hundred twenty-three".