55130122 has 4 divisors (see below), whose sum is σ = 82695186. Its totient is φ = 27565060.

The previous prime is 55130063. The next prime is 55130161. The reversal of 55130122 is 22103155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38800441 + 16329681 = 6229^2 + 4041^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55130122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13782529 + ... + 13782532.

Almost surely, 2^55130122 is an apocalyptic number.

55130122 is a deficient number, since it is larger than the sum of its proper divisors (27565064).

55130122 is a wasteful number, since it uses less digits than its factorization.

55130122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27565063.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 55130122 is about 7424.9661278689. The cubic root of 55130122 is about 380.5949176193.

Adding to 55130122 its reverse (22103155), we get a palindrome (77233277).

The spelling of 55130122 in words is "fifty-five million, one hundred thirty thousand, one hundred twenty-two".