145320523 has 8 divisors (see below), whose sum is σ = 149039856. Its totient is φ = 141609600.

The previous prime is 145320503. The next prime is 145320547. The reversal of 145320523 is 325023541.

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

It is a cyclic number.

It is not a de Polignac number, because 145320523 - 2¹³ = 145312331 is a prime.

It is a super-2 number, since 2×145320523² = 42236108809987058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145320503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47428 + ... + 50398.

It is an arithmetic number, because the mean of its divisors is an integer number (18629982).

Almost surely, 2^145320523 is an apocalyptic number.

145320523 is a deficient number, since it is larger than the sum of its proper divisors (3719333).

145320523 is a wasteful number, since it uses less digits than its factorization.

145320523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 145320523 is about 12054.8962251858. The cubic root of 145320523 is about 525.7456048389.

The spelling of 145320523 in words is "one hundred forty-five million, three hundred twenty thousand, five hundred twenty-three".