545606391 has 32 divisors (see below), whose sum is σ = 830476800. Its totient is φ = 315392000.

The previous prime is 545606389. The next prime is 545606423. The reversal of 545606391 is 193606545.

It is not a de Polignac number, because 545606391 - 2¹ = 545606389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545606291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 339991 + ... + 341591.

It is an arithmetic number, because the mean of its divisors is an integer number (25952400).

Almost surely, 2^545606391 is an apocalyptic number.

545606391 is a deficient number, since it is larger than the sum of its proper divisors (284870409).

545606391 is a wasteful number, since it uses less digits than its factorization.

545606391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 545606391 is about 23358.2189175459. The cubic root of 545606391 is about 817.1337520919.

The spelling of 545606391 in words is "five hundred forty-five million, six hundred six thousand, three hundred ninety-one".