54467729 has 4 divisors (see below), whose sum is σ = 55495476. Its totient is φ = 53439984.

The previous prime is 54467723. The next prime is 54467747. The reversal of 54467729 is 92776445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92776445 = 5 ⋅18555289.

It can be written as a sum of positive squares in 2 ways, for example, as 26884225 + 27583504 = 5185^2 + 5252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54467729 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54467729.

It is not an unprimeable number, because it can be changed into a prime (54467723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513794 + ... + 513899.

It is an arithmetic number, because the mean of its divisors is an integer number (13873869).

Almost surely, 2^54467729 is an apocalyptic number.

It is an amenable number.

54467729 is a deficient number, since it is larger than the sum of its proper divisors (1027747).

54467729 is a wasteful number, since it uses less digits than its factorization.

54467729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027746.

The product of its digits is 423360, while the sum is 44.

The square root of 54467729 is about 7380.2255385591. The cubic root of 54467729 is about 379.0644785093.

The spelling of 54467729 in words is "fifty-four million, four hundred sixty-seven thousand, seven hundred twenty-nine".