55428826 has 4 divisors (see below), whose sum is σ = 83143242. Its totient is φ = 27714412.

The previous prime is 55428817. The next prime is 55428829. The reversal of 55428826 is 62882455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62882455 = 5 ⋅12576491.

It can be written as a sum of positive squares in only one way, i.e., 36060025 + 19368801 = 6005^2 + 4401^2 .

It is not an unprimeable number, because it can be changed into a prime (55428829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13857205 + ... + 13857208.

Almost surely, 2^55428826 is an apocalyptic number.

55428826 is a deficient number, since it is larger than the sum of its proper divisors (27714416).

55428826 is a wasteful number, since it uses less digits than its factorization.

55428826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27714415.

The product of its digits is 153600, while the sum is 40.

The square root of 55428826 is about 7445.0537942986. The cubic root of 55428826 is about 381.2810550355.

The spelling of 55428826 in words is "fifty-five million, four hundred twenty-eight thousand, eight hundred twenty-six".