55351555 has 8 divisors (see below), whose sum is σ = 75910752. Its totient is φ = 37955328.

The previous prime is 55351537. The next prime is 55351567. The reversal of 55351555 is 55515355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55351555 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55351555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790702 + ... + 790771.

It is an arithmetic number, because the mean of its divisors is an integer number (9488844).

Almost surely, 2^55351555 is an apocalyptic number.

55351555 is a deficient number, since it is larger than the sum of its proper divisors (20559197).

55351555 is a wasteful number, since it uses less digits than its factorization.

55351555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581485.

The product of its digits is 46875, while the sum is 34.

The square root of 55351555 is about 7439.8625659349. The cubic root of 55351555 is about 381.1037966683.

The spelling of 55351555 in words is "fifty-five million, three hundred fifty-one thousand, five hundred fifty-five".