55405414 has 16 divisors (see below), whose sum is σ = 90045648. Its totient is φ = 25466112.

The previous prime is 55405409. The next prime is 55405417. The reversal of 55405414 is 41450455.

It is a super-2 number, since 2×55405414² = 6139519801022792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55405417) 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, 17487 + ... + 20410.

It is an arithmetic number, because the mean of its divisors is an integer number (5627853).

Almost surely, 2^55405414 is an apocalyptic number.

55405414 is a deficient number, since it is larger than the sum of its proper divisors (34640234).

55405414 is a wasteful number, since it uses less digits than its factorization.

55405414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37959.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 55405414 is about 7443.4813091725. The cubic root of 55405414 is about 381.2273657081.

Adding to 55405414 its reverse (41450455), we get a palindrome (96855869).

The spelling of 55405414 in words is "fifty-five million, four hundred five thousand, four hundred fourteen".