545997847 has 4 divisors (see below), whose sum is σ = 547295176. Its totient is φ = 544700520.

The previous prime is 545997841. The next prime is 545997853. The reversal of 545997847 is 748799545.

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

It is an interprime number because it is at equal distance from previous prime (545997841) and next prime (545997853).

It is a cyclic number.

It is not a de Polignac number, because 545997847 - 2³ = 545997839 is a prime.

It is a super-2 number, since 2×545997847² = 596227297857270818, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 545997791 and 545997800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545997841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648033 + ... + 648874.

It is an arithmetic number, because the mean of its divisors is an integer number (136823794).

Almost surely, 2^545997847 is an apocalyptic number.

545997847 is a deficient number, since it is larger than the sum of its proper divisors (1297329).

545997847 is a wasteful number, since it uses less digits than its factorization.

545997847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297328.

The product of its digits is 12700800, while the sum is 58.

The square root of 545997847 is about 23366.5968211034. The cubic root of 545997847 is about 817.3291282497.

The spelling of 545997847 in words is "five hundred forty-five million, nine hundred ninety-seven thousand, eight hundred forty-seven".