54369809 has 12 divisors (see below), whose sum is σ = 60652956. Its totient is φ = 48447168.

The previous prime is 54369797. The next prime is 54369817. The reversal of 54369809 is 90896345.

It can be written as a sum of positive squares in 6 ways, for example, as 494209 + 53875600 = 703^2 + 7340^2 .

It is a de Polignac number, because none of the positive numbers 2^k-54369809 is a prime.

It is a super-2 number, since 2×54369809² = 5912152261392962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54369809.

It is not an unprimeable number, because it can be changed into a prime (54369829) 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, 8447 + ... + 13419.

It is an arithmetic number, because the mean of its divisors is an integer number (5054413).

Almost surely, 2^54369809 is an apocalyptic number.

It is an amenable number.

54369809 is a deficient number, since it is larger than the sum of its proper divisors (6283147).

54369809 is a wasteful number, since it uses less digits than its factorization.

54369809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5044 (or 5015 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 54369809 is about 7373.5886107105. The cubic root of 54369809 is about 378.8371863753.

The spelling of 54369809 in words is "fifty-four million, three hundred sixty-nine thousand, eight hundred nine".