55309130 has 16 divisors (see below), whose sum is σ = 101675520. Its totient is φ = 21652752.

The previous prime is 55309097. The next prime is 55309147. The reversal of 55309130 is 3190355.

It is a super-2 number, since 2×55309130² = 6118199722713800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55309130.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58370 + ... + 59309.

It is an arithmetic number, because the mean of its divisors is an integer number (6354720).

Almost surely, 2^55309130 is an apocalyptic number.

55309130 is a deficient number, since it is larger than the sum of its proper divisors (46366390).

55309130 is a wasteful number, since it uses less digits than its factorization.

55309130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117733.

The product of its (nonzero) digits is 2025, while the sum is 26.

The square root of 55309130 is about 7437.0108242492. The cubic root of 55309130 is about 381.0064042755.

Adding to 55309130 its reverse (3190355), we get a palindrome (58499485).

The spelling of 55309130 in words is "fifty-five million, three hundred nine thousand, one hundred thirty".