55397266 has 8 divisors (see below), whose sum is σ = 83132784. Its totient is φ = 27686340.

The previous prime is 55397263. The next prime is 55397267. The reversal of 55397266 is 66279355.

55397266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (55397263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281 + ... + 10603.

It is an arithmetic number, because the mean of its divisors is an integer number (10391598).

Almost surely, 2^55397266 is an apocalyptic number.

55397266 is a deficient number, since it is larger than the sum of its proper divisors (27735518).

55397266 is a wasteful number, since it uses less digits than its factorization.

55397266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12296.

The product of its digits is 340200, while the sum is 43.

The square root of 55397266 is about 7442.9339645062. The cubic root of 55397266 is about 381.2086768434.

The spelling of 55397266 in words is "fifty-five million, three hundred ninety-seven thousand, two hundred sixty-six".