55455405 has 16 divisors (see below), whose sum is σ = 90184704. Its totient is φ = 29090880.

The previous prime is 55455403. The next prime is 55455427. The reversal of 55455405 is 50455455.

It is not a de Polignac number, because 55455405 - 2¹ = 55455403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55455401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29389 + ... + 31218.

It is an arithmetic number, because the mean of its divisors is an integer number (5636544).

Almost surely, 2^55455405 is an apocalyptic number.

It is an amenable number.

55455405 is a deficient number, since it is larger than the sum of its proper divisors (34729299).

55455405 is a wasteful number, since it uses less digits than its factorization.

55455405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60676.

The product of its (nonzero) digits is 50000, while the sum is 33.

The square root of 55455405 is about 7446.8385909727. The cubic root of 55455405 is about 381.3419887320.

The spelling of 55455405 in words is "fifty-five million, four hundred fifty-five thousand, four hundred five".