55515343 has 4 divisors (see below), whose sum is σ = 59785768. Its totient is φ = 51244920.

The previous prime is 55515293. The next prime is 55515373. The reversal of 55515343 is 34351555.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55515343 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 (55515373) 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, 2135193 + ... + 2135218.

It is an arithmetic number, because the mean of its divisors is an integer number (14946442).

Almost surely, 2^55515343 is an apocalyptic number.

55515343 is a deficient number, since it is larger than the sum of its proper divisors (4270425).

55515343 is a wasteful number, since it uses less digits than its factorization.

55515343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270424.

The product of its digits is 22500, while the sum is 31.

The square root of 55515343 is about 7450.8618964520. The cubic root of 55515343 is about 381.4793281926.

Adding to 55515343 its reverse (34351555), we get a palindrome (89866898).

The spelling of 55515343 in words is "fifty-five million, five hundred fifteen thousand, three hundred forty-three".