55538311 has 4 divisors (see below), whose sum is σ = 58461400. Its totient is φ = 52615224.

The previous prime is 55538297. The next prime is 55538317. The reversal of 55538311 is 11383555.

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

It is a cyclic number.

It is not a de Polignac number, because 55538311 - 2¹⁷ = 55407239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55538317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1461516 + ... + 1461553.

It is an arithmetic number, because the mean of its divisors is an integer number (14615350).

Almost surely, 2^55538311 is an apocalyptic number.

55538311 is a deficient number, since it is larger than the sum of its proper divisors (2923089).

55538311 is a wasteful number, since it uses less digits than its factorization.

55538311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923088.

The product of its digits is 9000, while the sum is 31.

The square root of 55538311 is about 7452.4030352632. The cubic root of 55538311 is about 381.5319299221.

The spelling of 55538311 in words is "fifty-five million, five hundred thirty-eight thousand, three hundred eleven".