55182729 has 16 divisors (see below), whose sum is σ = 84224000. Its totient is φ = 31482000.

The previous prime is 55182709. The next prime is 55182733. The reversal of 55182729 is 92728155.

It is a de Polignac number, because none of the positive numbers 2^k-55182729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55182709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14022 + ... + 17520.

It is an arithmetic number, because the mean of its divisors is an integer number (5264000).

Almost surely, 2^55182729 is an apocalyptic number.

It is an amenable number.

55182729 is a deficient number, since it is larger than the sum of its proper divisors (29041271).

55182729 is a wasteful number, since it uses less digits than its factorization.

55182729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260.

The product of its digits is 50400, while the sum is 39.

The square root of 55182729 is about 7428.5078582445. The cubic root of 55182729 is about 380.7159379191.

The spelling of 55182729 in words is "fifty-five million, one hundred eighty-two thousand, seven hundred twenty-nine".