55611729 has 6 divisors (see below), whose sum is σ = 80328066. Its totient is φ = 37074480.

The previous prime is 55611719. The next prime is 55611757. The reversal of 55611729 is 92711655.

It can be written as a sum of positive squares in only one way, i.e., 39087504 + 16524225 = 6252^2 + 4065^2 .

It is not a de Polignac number, because 55611729 - 2⁴ = 55611713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55611693 and 55611702.

It is not an unprimeable number, because it can be changed into a prime (55611719) 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, 3089532 + ... + 3089549.

It is an arithmetic number, because the mean of its divisors is an integer number (13388011).

Almost surely, 2^55611729 is an apocalyptic number.

It is an amenable number.

55611729 is a deficient number, since it is larger than the sum of its proper divisors (24716337).

55611729 is a wasteful number, since it uses less digits than its factorization.

55611729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6179087 (or 6179084 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 55611729 is about 7457.3272021549. The cubic root of 55611729 is about 381.6999759475.

The spelling of 55611729 in words is "fifty-five million, six hundred eleven thousand, seven hundred twenty-nine".