55251129 has 8 divisors (see below), whose sum is σ = 76871232. Its totient is φ = 35232560.

The previous prime is 55251121. The next prime is 55251151. The reversal of 55251129 is 92115255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55251129 - 2³ = 55251121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55251096 and 55251105.

It is not an unprimeable number, because it can be changed into a prime (55251121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400302 + ... + 400439.

It is an arithmetic number, because the mean of its divisors is an integer number (9608904).

Almost surely, 2^55251129 is an apocalyptic number.

It is an amenable number.

55251129 is a deficient number, since it is larger than the sum of its proper divisors (21620103).

55251129 is a wasteful number, since it uses less digits than its factorization.

55251129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800767.

The product of its digits is 4500, while the sum is 30.

The square root of 55251129 is about 7433.1103180297. The cubic root of 55251129 is about 380.8731744229.

It can be divided in two parts, 552 and 51129, that added together give a triangular number (51681 = T₃₂₁).

The spelling of 55251129 in words is "fifty-five million, two hundred fifty-one thousand, one hundred twenty-nine".