55228743 has 8 divisors (see below), whose sum is σ = 81820400. Its totient is φ = 36819144.

The previous prime is 55228741. The next prime is 55228757. The reversal of 55228743 is 34782255.

It is not a de Polignac number, because 55228743 - 2¹ = 55228741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55228698 and 55228707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55228741) 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, 1022728 + ... + 1022781.

It is an arithmetic number, because the mean of its divisors is an integer number (10227550).

Almost surely, 2^55228743 is an apocalyptic number.

55228743 is a deficient number, since it is larger than the sum of its proper divisors (26591657).

55228743 is a wasteful number, since it uses less digits than its factorization.

55228743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045518 (or 2045512 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 55228743 is about 7431.6043355389. The cubic root of 55228743 is about 380.8217282424.

The spelling of 55228743 in words is "fifty-five million, two hundred twenty-eight thousand, seven hundred forty-three".