545312302523 has 4 divisors (see below), whose sum is σ = 554251848528. Its totient is φ = 536372756520.

The previous prime is 545312302517. The next prime is 545312302531. The reversal of 545312302523 is 325203213545.

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-545312302523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545312362523) 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, 4469772911 + ... + 4469773032.

It is an arithmetic number, because the mean of its divisors is an integer number (138562962132).

Almost surely, 2^545312302523 is an apocalyptic number.

545312302523 is a deficient number, since it is larger than the sum of its proper divisors (8939546005).

545312302523 is an equidigital number, since it uses as much as digits as its factorization.

545312302523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8939546004.

The product of its (nonzero) digits is 108000, while the sum is 35.

The spelling of 545312302523 in words is "five hundred forty-five billion, three hundred twelve million, three hundred two thousand, five hundred twenty-three".