545305990 has 8 divisors (see below), whose sum is σ = 981550800. Its totient is φ = 218122392.

The previous prime is 545305961. The next prime is 545305997. The reversal of 545305990 is 99503545.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545305997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27265290 + ... + 27265309.

It is an arithmetic number, because the mean of its divisors is an integer number (122693850).

Almost surely, 2^545305990 is an apocalyptic number.

545305990 is a deficient number, since it is larger than the sum of its proper divisors (436244810).

545305990 is a wasteful number, since it uses less digits than its factorization.

545305990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54530606.

The product of its (nonzero) digits is 121500, while the sum is 40.

The square root of 545305990 is about 23351.7877259965. The cubic root of 545305990 is about 816.9837582110.

The spelling of 545305990 in words is "five hundred forty-five million, three hundred five thousand, nine hundred ninety".