55252130 has 8 divisors (see below), whose sum is σ = 99453852. Its totient is φ = 22100848.

The previous prime is 55252123. The next prime is 55252139. The reversal of 55252130 is 3125255.

It can be written as a sum of positive squares in 2 ways, for example, as 54213769 + 1038361 = 7363^2 + 1019^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 55252096 and 55252105.

It is not an unprimeable number, because it can be changed into a prime (55252139) 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 3 ways as a sum of consecutive naturals, for example, 2762597 + ... + 2762616.

Almost surely, 2^55252130 is an apocalyptic number.

55252130 is a deficient number, since it is larger than the sum of its proper divisors (44201722).

55252130 is a wasteful number, since it uses less digits than its factorization.

55252130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5525220.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 55252130 is about 7433.1776515835. The cubic root of 55252130 is about 380.8754745372.

Adding to 55252130 its reverse (3125255), we get a palindrome (58377385).

The spelling of 55252130 in words is "fifty-five million, two hundred fifty-two thousand, one hundred thirty".