55020130 has 32 divisors (see below), whose sum is σ = 108630720. Its totient is φ = 19897920.

The previous prime is 55020113. The next prime is 55020137. The reversal of 55020130 is 3102055.

It is not an unprimeable number, because it can be changed into a prime (55020137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20401 + ... + 22939.

It is an arithmetic number, because the mean of its divisors is an integer number (3394710).

Almost surely, 2^55020130 is an apocalyptic number.

55020130 is a deficient number, since it is larger than the sum of its proper divisors (53610590).

55020130 is a wasteful number, since it uses less digits than its factorization.

55020130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 55020130 is about 7417.5555272610. Note that the first 4 decimals coincide. The cubic root of 55020130 is about 380.3416364370.

Adding to 55020130 its reverse (3102055), we get a palindrome (58122185).

The spelling of 55020130 in words is "fifty-five million, twenty thousand, one hundred thirty".