545558542 has 4 divisors (see below), whose sum is σ = 818337816. Its totient is φ = 272779270.

The previous prime is 545558513. The next prime is 545558557. The reversal of 545558542 is 245855545.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136389634 + ... + 136389637.

It is an arithmetic number, because the mean of its divisors is an integer number (204584454).

Almost surely, 2^545558542 is an apocalyptic number.

545558542 is a deficient number, since it is larger than the sum of its proper divisors (272779274).

545558542 is a wasteful number, since it uses less digits than its factorization.

545558542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272779273.

The product of its digits is 800000, while the sum is 43.

The square root of 545558542 is about 23357.1946517556. The cubic root of 545558542 is about 817.1098641899.

The spelling of 545558542 in words is "five hundred forty-five million, five hundred fifty-eight thousand, five hundred forty-two".