545161615 has 4 divisors (see below), whose sum is σ = 654193944. Its totient is φ = 436129288.

The previous prime is 545161613. The next prime is 545161649. The reversal of 545161615 is 516161545.

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 545161615 - 2¹ = 545161613 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 (545161613) 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, 54516157 + ... + 54516166.

It is an arithmetic number, because the mean of its divisors is an integer number (163548486).

Almost surely, 2^545161615 is an apocalyptic number.

545161615 is a deficient number, since it is larger than the sum of its proper divisors (109032329).

545161615 is a wasteful number, since it uses less digits than its factorization.

545161615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109032328.

The product of its digits is 18000, while the sum is 34.

The square root of 545161615 is about 23348.6962162773. The cubic root of 545161615 is about 816.9116504137.

The spelling of 545161615 in words is "five hundred forty-five million, one hundred sixty-one thousand, six hundred fifteen".