55711129 has 4 divisors (see below), whose sum is σ = 58133376. Its totient is φ = 53288884.

The previous prime is 55711111. The next prime is 55711133. The reversal of 55711129 is 92111755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92111755 = 5 ⋅18422351.

It is not a de Polignac number, because 55711129 - 2⁹ = 55710617 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 55711129.

It is not an unprimeable number, because it can be changed into a prime (55711429) 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, 1211089 + ... + 1211134.

It is an arithmetic number, because the mean of its divisors is an integer number (14533344).

Almost surely, 2^55711129 is an apocalyptic number.

It is an amenable number.

55711129 is a deficient number, since it is larger than the sum of its proper divisors (2422247).

55711129 is a wasteful number, since it uses less digits than its factorization.

55711129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2422246.

The product of its digits is 3150, while the sum is 31.

The square root of 55711129 is about 7463.9888129605. The cubic root of 55711129 is about 381.9272565084.

The spelling of 55711129 in words is "fifty-five million, seven hundred eleven thousand, one hundred twenty-nine".