55351318 has 16 divisors (see below), whose sum is σ = 90757584. Its totient is φ = 25108960.

The previous prime is 55351291. The next prime is 55351319. The reversal of 55351318 is 81315355.

It is a self number, because there is not a number n which added to its sum of digits gives 55351318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55351319) by changing a digit.

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, 9996 + ... + 14512.

It is an arithmetic number, because the mean of its divisors is an integer number (5672349).

Almost surely, 2^55351318 is an apocalyptic number.

55351318 is a deficient number, since it is larger than the sum of its proper divisors (35406266).

55351318 is a wasteful number, since it uses less digits than its factorization.

55351318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5087.

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

The square root of 55351318 is about 7439.8466382043. The cubic root of 55351318 is about 381.1032527406.

The spelling of 55351318 in words is "fifty-five million, three hundred fifty-one thousand, three hundred eighteen".