545624245 has 4 divisors (see below), whose sum is σ = 654749100. Its totient is φ = 436499392.

The previous prime is 545624227. The next prime is 545624251. The reversal of 545624245 is 542426545.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542426545 = 5 ⋅108485309.

It can be written as a sum of positive squares in 2 ways, for example, as 337052881 + 208571364 = 18359^2 + 14442^2 .

It is a cyclic number.

It is not a de Polignac number, because 545624245 - 2¹³ = 545616053 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 54562420 + ... + 54562429.

It is an arithmetic number, because the mean of its divisors is an integer number (163687275).

Almost surely, 2^545624245 is an apocalyptic number.

It is an amenable number.

545624245 is a deficient number, since it is larger than the sum of its proper divisors (109124855).

545624245 is a wasteful number, since it uses less digits than its factorization.

545624245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109124854.

The product of its digits is 192000, while the sum is 37.

The square root of 545624245 is about 23358.6010925312. The cubic root of 545624245 is about 817.1426650782.

The spelling of 545624245 in words is "five hundred forty-five million, six hundred twenty-four thousand, two hundred forty-five".