55002543 has 4 divisors (see below), whose sum is σ = 73336728. Its totient is φ = 36668360.

The previous prime is 55002539. The next prime is 55002553. The reversal of 55002543 is 34520055.

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 55002543 - 2² = 55002539 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55002503) 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, 9167088 + ... + 9167093.

It is an arithmetic number, because the mean of its divisors is an integer number (18334182).

Almost surely, 2^55002543 is an apocalyptic number.

55002543 is a deficient number, since it is larger than the sum of its proper divisors (18334185).

55002543 is a wasteful number, since it uses less digits than its factorization.

55002543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18334184.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 55002543 is about 7416.3699341389. The cubic root of 55002543 is about 380.3011071422.

Adding to 55002543 its reverse (34520055), we get a palindrome (89522598).

The spelling of 55002543 in words is "fifty-five million, two thousand, five hundred forty-three".