55672289 has 4 divisors (see below), whose sum is σ = 56005824. Its totient is φ = 55338756.

The previous prime is 55672283. The next prime is 55672303. The reversal of 55672289 is 98227655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98227655 = 5 ⋅19645531.

It is a cyclic number.

It is not a de Polignac number, because 55672289 - 2¹⁶ = 55606753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55672283) 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, 166517 + ... + 166850.

It is an arithmetic number, because the mean of its divisors is an integer number (14001456).

Almost surely, 2^55672289 is an apocalyptic number.

It is an amenable number.

55672289 is a deficient number, since it is larger than the sum of its proper divisors (333535).

55672289 is a wasteful number, since it uses less digits than its factorization.

55672289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333534.

The product of its digits is 302400, while the sum is 44.

The square root of 55672289 is about 7461.3865333462. The cubic root of 55672289 is about 381.8384800914.

The spelling of 55672289 in words is "fifty-five million, six hundred seventy-two thousand, two hundred eighty-nine".