54171729 has 6 divisors (see below), whose sum is σ = 78248066. Its totient is φ = 36114480.

The previous prime is 54171727. The next prime is 54171731. The reversal of 54171729 is 92717145.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (54171727) and next prime (54171731).

It can be written as a sum of positive squares in only one way, i.e., 51840000 + 2331729 = 7200^2 + 1527^2 .

It is not a de Polignac number, because 54171729 - 2¹ = 54171727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54171693 and 54171702.

It is not an unprimeable number, because it can be changed into a prime (54171727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3009532 + ... + 3009549.

Almost surely, 2^54171729 is an apocalyptic number.

It is an amenable number.

54171729 is a deficient number, since it is larger than the sum of its proper divisors (24076337).

54171729 is a wasteful number, since it uses less digits than its factorization.

54171729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6019087 (or 6019084 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 54171729 is about 7360.1446317311. The cubic root of 54171729 is about 378.3765668711.

The spelling of 54171729 in words is "fifty-four million, one hundred seventy-one thousand, seven hundred twenty-nine".