545566957 has 4 divisors (see below), whose sum is σ = 587533660. Its totient is φ = 503600256.

The previous prime is 545566949. The next prime is 545566979. The reversal of 545566957 is 759665545.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 178997641 + 366569316 = 13379^2 + 19146^2 .

It is a cyclic number.

It is not a de Polignac number, because 545566957 - 2³ = 545566949 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 (545566657) 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, 20983332 + ... + 20983357.

It is an arithmetic number, because the mean of its divisors is an integer number (146883415).

Almost surely, 2^545566957 is an apocalyptic number.

It is an amenable number.

545566957 is a deficient number, since it is larger than the sum of its proper divisors (41966703).

545566957 is a wasteful number, since it uses less digits than its factorization.

545566957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41966702.

The product of its digits is 5670000, while the sum is 52.

The square root of 545566957 is about 23357.3747882762. The cubic root of 545566957 is about 817.1140653548.

The spelling of 545566957 in words is "five hundred forty-five million, five hundred sixty-six thousand, nine hundred fifty-seven".