545645573 has 4 divisors (see below), whose sum is σ = 595249728. Its totient is φ = 496041420.

The previous prime is 545645563. The next prime is 545645587. The reversal of 545645573 is 375546545.

It is a happy number.

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 545645573 - 2¹² = 545641477 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 (545645563) 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, 24802061 + ... + 24802082.

It is an arithmetic number, because the mean of its divisors is an integer number (148812432).

Almost surely, 2^545645573 is an apocalyptic number.

It is an amenable number.

545645573 is a deficient number, since it is larger than the sum of its proper divisors (49604155).

545645573 is a wasteful number, since it uses less digits than its factorization.

545645573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49604154.

The product of its digits is 1260000, while the sum is 44.

The square root of 545645573 is about 23359.0576222587. The cubic root of 545645573 is about 817.1533120829.

The spelling of 545645573 in words is "five hundred forty-five million, six hundred forty-five thousand, five hundred seventy-three".