55106340 has 24 divisors (see below), whose sum is σ = 154297920. Its totient is φ = 14695008.

The previous prime is 55106323. The next prime is 55106347. The reversal of 55106340 is 4360155.

It is a self number, because there is not a number n which added to its sum of digits gives 55106340.

It is not an unprimeable number, because it can be changed into a prime (55106347) 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, 459160 + ... + 459279.

It is an arithmetic number, because the mean of its divisors is an integer number (6429080).

Almost surely, 2^55106340 is an apocalyptic number.

It is an amenable number.

55106340 is an abundant number, since it is smaller than the sum of its proper divisors (99191580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55106340 is a wasteful number, since it uses less digits than its factorization.

55106340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918451 (or 918449 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 55106340 is about 7423.3644663320. The cubic root of 55106340 is about 380.5401828099.

Adding to 55106340 its reverse (4360155), we get a palindrome (59466495).

The spelling of 55106340 in words is "fifty-five million, one hundred six thousand, three hundred forty".