545005442 has 4 divisors (see below), whose sum is σ = 817508166. Its totient is φ = 272502720.

The previous prime is 545005429. The next prime is 545005469. The reversal of 545005442 is 244500545.

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

It can be written as a sum of positive squares in only one way, i.e., 506205001 + 38800441 = 22499^2 + 6229^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136251359 + ... + 136251362.

Almost surely, 2^545005442 is an apocalyptic number.

545005442 is a deficient number, since it is larger than the sum of its proper divisors (272502724).

545005442 is a wasteful number, since it uses less digits than its factorization.

545005442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272502723.

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 545005442 is about 23345.3516144007. The cubic root of 545005442 is about 816.8336357943.

Adding to 545005442 its reverse (244500545), we get a palindrome (789505987).

The spelling of 545005442 in words is "five hundred forty-five million, five thousand, four hundred forty-two".