55023143 has 8 divisors (see below), whose sum is σ = 63119520. Its totient is φ = 46985760.

The previous prime is 55023139. The next prime is 55023149. The reversal of 55023143 is 34132055.

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

It is a cyclic number.

It is not a de Polignac number, because 55023143 - 2² = 55023139 is a prime.

It is a super-3 number, since 3×55023143³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55023149) 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, 12728 + ... + 16493.

It is an arithmetic number, because the mean of its divisors is an integer number (7889940).

Almost surely, 2^55023143 is an apocalyptic number.

55023143 is a deficient number, since it is larger than the sum of its proper divisors (8096377).

55023143 is a wasteful number, since it uses less digits than its factorization.

55023143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29497.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 55023143 is about 7417.7586237353. The cubic root of 55023143 is about 380.3485790380.

Adding to 55023143 its reverse (34132055), we get a palindrome (89155198).

The spelling of 55023143 in words is "fifty-five million, twenty-three thousand, one hundred forty-three".