545656546 has 4 divisors (see below), whose sum is σ = 818484822. Its totient is φ = 272828272.

The previous prime is 545656543. The next prime is 545656549. The reversal of 545656546 is 645656545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 645656545 = 5 ⋅129131309.

It is an interprime number because it is at equal distance from previous prime (545656543) and next prime (545656549).

It can be written as a sum of positive squares in only one way, i.e., 530795521 + 14861025 = 23039^2 + 3855^2 .

It is a junction number, because it is equal to n+sod(n) for n = 545656496 and 545656505.

It is not an unprimeable number, because it can be changed into a prime (545656543) 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 as a sum of consecutive naturals, namely, 136414135 + ... + 136414138.

Almost surely, 2^545656546 is an apocalyptic number.

545656546 is a deficient number, since it is larger than the sum of its proper divisors (272828276).

545656546 is a wasteful number, since it uses less digits than its factorization.

545656546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272828275.

The product of its digits is 2160000, while the sum is 46.

The square root of 545656546 is about 23359.2924978476. The cubic root of 545656546 is about 817.1587897309.

Subtracting 545656546 from its reverse (645656545), we obtain a palindrome (99999999).

The spelling of 545656546 in words is "five hundred forty-five million, six hundred fifty-six thousand, five hundred forty-six".