54901809 has 6 divisors (see below), whose sum is σ = 79302626. Its totient is φ = 36601200.

The previous prime is 54901793. The next prime is 54901813. The reversal of 54901809 is 90810945.

54901809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 39125025 + 15776784 = 6255^2 + 3972^2 .

It is not a de Polignac number, because 54901809 - 2⁴ = 54901793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54901879) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 3050092 + ... + 3050109.

Almost surely, 2^54901809 is an apocalyptic number.

It is an amenable number.

54901809 is a deficient number, since it is larger than the sum of its proper divisors (24400817).

54901809 is a wasteful number, since it uses less digits than its factorization.

54901809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6100207 (or 6100204 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 54901809 is about 7409.5754939133. The cubic root of 54901809 is about 380.0687987160.

The spelling of 54901809 in words is "fifty-four million, nine hundred one thousand, eight hundred nine".