54890505 has 12 divisors (see below), whose sum is σ = 95143620. Its totient is φ = 29274912.

The previous prime is 54890477. The next prime is 54890509. The reversal of 54890505 is 50509845.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21678336 + 33212169 = 4656^2 + 5763^2 .

It is not a de Polignac number, because 54890505 - 2⁷ = 54890377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54890505.

It is not an unprimeable number, because it can be changed into a prime (54890509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 609850 + ... + 609939.

It is an arithmetic number, because the mean of its divisors is an integer number (7928635).

Almost surely, 2^54890505 is an apocalyptic number.

It is an amenable number.

54890505 is a deficient number, since it is larger than the sum of its proper divisors (40253115).

54890505 is a wasteful number, since it uses less digits than its factorization.

54890505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219800 (or 1219797 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 54890505 is about 7408.8126579095. The cubic root of 54890505 is about 380.0427121888.

The spelling of 54890505 in words is "fifty-four million, eight hundred ninety thousand, five hundred five".