54797909 has 4 divisors (see below), whose sum is σ = 54887916. Its totient is φ = 54707904.

The previous prime is 54797903. The next prime is 54797917. The reversal of 54797909 is 90979745.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2640625 + 52157284 = 1625^2 + 7222^2 .

It is a cyclic number.

It is not a de Polignac number, because 54797909 - 2¹⁶ = 54732373 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 (54797903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44084 + ... + 45309.

It is an arithmetic number, because the mean of its divisors is an integer number (13721979).

Almost surely, 2^54797909 is an apocalyptic number.

It is an amenable number.

54797909 is a deficient number, since it is larger than the sum of its proper divisors (90007).

54797909 is an equidigital number, since it uses as much as digits as its factorization.

54797909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90006.

The product of its (nonzero) digits is 714420, while the sum is 50.

The square root of 54797909 is about 7402.5609757705. The cubic root of 54797909 is about 379.8288911076.

The spelling of 54797909 in words is "fifty-four million, seven hundred ninety-seven thousand, nine hundred nine".