55053405 has 64 divisors (see below), whose sum is σ = 107965440. Its totient is φ = 26395200.

The previous prime is 55053391. The next prime is 55053433. The reversal of 55053405 is 50435055.

It is not a de Polignac number, because 55053405 - 2⁷ = 55053277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 194394 + ... + 194676.

It is an arithmetic number, because the mean of its divisors is an integer number (1686960).

Almost surely, 2^55053405 is an apocalyptic number.

55053405 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55053405 is a deficient number, since it is larger than the sum of its proper divisors (52912035).

55053405 is a wasteful number, since it uses less digits than its factorization.

55053405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 55053405 is about 7419.7981778482. The cubic root of 55053405 is about 380.4182951525.

The spelling of 55053405 in words is "fifty-five million, fifty-three thousand, four hundred five".