55352138 has 4 divisors (see below), whose sum is σ = 83028210. Its totient is φ = 27676068.

The previous prime is 55352123. The next prime is 55352183. The reversal of 55352138 is 83125355.

55352138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83125355 = 5 ⋅16625071.

It can be written as a sum of positive squares in only one way, i.e., 31214569 + 24137569 = 5587^2 + 4913^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13838033 + ... + 13838036.

Almost surely, 2^55352138 is an apocalyptic number.

55352138 is a deficient number, since it is larger than the sum of its proper divisors (27676072).

55352138 is a wasteful number, since it uses less digits than its factorization.

55352138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27676071.

The product of its digits is 18000, while the sum is 32.

The square root of 55352138 is about 7439.9017466631. The cubic root of 55352138 is about 381.1051346779.

The spelling of 55352138 in words is "fifty-five million, three hundred fifty-two thousand, one hundred thirty-eight".