55812543 has 8 divisors (see below), whose sum is σ = 74451456. Its totient is φ = 37191000.

The previous prime is 55812529. The next prime is 55812583. The reversal of 55812543 is 34521855.

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

It is not a de Polignac number, because 55812543 - 2⁴ = 55812527 is a prime.

It is a super-2 number, since 2×55812543² = 6230079912253698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55812503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9138 + ... + 13968.

It is an arithmetic number, because the mean of its divisors is an integer number (9306432).

Almost surely, 2^55812543 is an apocalyptic number.

55812543 is a deficient number, since it is larger than the sum of its proper divisors (18638913).

55812543 is a wasteful number, since it uses less digits than its factorization.

55812543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8685.

The product of its digits is 24000, while the sum is 33.

The square root of 55812543 is about 7470.7792766217. The cubic root of 55812543 is about 382.1588636862.

The spelling of 55812543 in words is "fifty-five million, eight hundred twelve thousand, five hundred forty-three".