545866791 has 8 divisors (see below), whose sum is σ = 727976304. Its totient is φ = 363834240.

The previous prime is 545866777. The next prime is 545866801. The reversal of 545866791 is 197668545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 545866791 - 2¹⁷ = 545735719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545866691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85 + ... + 33041.

It is an arithmetic number, because the mean of its divisors is an integer number (90997038).

Almost surely, 2^545866791 is an apocalyptic number.

545866791 is a deficient number, since it is larger than the sum of its proper divisors (182109513).

545866791 is a wasteful number, since it uses less digits than its factorization.

545866791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38481.

The product of its digits is 1814400, while the sum is 51.

The square root of 545866791 is about 23363.7923077569. The cubic root of 545866791 is about 817.2637284450.

The spelling of 545866791 in words is "five hundred forty-five million, eight hundred sixty-six thousand, seven hundred ninety-one".