545155550 has 48 divisors (see below), whose sum is σ = 1034277552. Its totient is φ = 213734400.

The previous prime is 545155531. The next prime is 545155561. The reversal of 545155550 is 55551545.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 545155550.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1182320 + ... + 1182780.

It is an arithmetic number, because the mean of its divisors is an integer number (21547449).

Almost surely, 2^545155550 is an apocalyptic number.

545155550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

545155550 is a deficient number, since it is larger than the sum of its proper divisors (489122002).

545155550 is a wasteful number, since it uses less digits than its factorization.

545155550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 35.

The square root of 545155550 is about 23348.5663371437. The cubic root of 545155550 is about 816.9086209833.

The spelling of 545155550 in words is "five hundred forty-five million, one hundred fifty-five thousand, five hundred fifty".