545254161 has 4 divisors (see below), whose sum is σ = 727005552. Its totient is φ = 363502772.

The previous prime is 545254159. The next prime is 545254211. The reversal of 545254161 is 161452545.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 545254161 - 2¹ = 545254159 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (545254111) 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, 90875691 + ... + 90875696.

It is an arithmetic number, because the mean of its divisors is an integer number (181751388).

Almost surely, 2^545254161 is an apocalyptic number.

It is an amenable number.

545254161 is a deficient number, since it is larger than the sum of its proper divisors (181751391).

545254161 is a wasteful number, since it uses less digits than its factorization.

545254161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181751390.

The product of its digits is 24000, while the sum is 33.

The square root of 545254161 is about 23350.6779558967. The cubic root of 545254161 is about 816.9578737879.

The spelling of 545254161 in words is "five hundred forty-five million, two hundred fifty-four thousand, one hundred sixty-one".