55186130 has 16 divisors (see below), whose sum is σ = 102760920. Its totient is φ = 21313152.

The previous prime is 55186111. The next prime is 55186133. The reversal of 55186130 is 3168155.

It can be written as a sum of positive squares in 4 ways, for example, as 38775529 + 16410601 = 6227^2 + 4051^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 55186093 and 55186102.

It is not an unprimeable number, because it can be changed into a prime (55186133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94859 + ... + 95438.

Almost surely, 2^55186130 is an apocalyptic number.

55186130 is a deficient number, since it is larger than the sum of its proper divisors (47574790).

55186130 is a wasteful number, since it uses less digits than its factorization.

55186130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190333.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 55186130 is about 7428.7367701380. The cubic root of 55186130 is about 380.7237591361.

The spelling of 55186130 in words is "fifty-five million, one hundred eighty-six thousand, one hundred thirty".