55405252445 has 16 divisors (see below), whose sum is σ = 66894643200. Its totient is φ = 44052807744.

The previous prime is 55405252421. The next prime is 55405252451. The reversal of 55405252445 is 54425250455.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55405252445 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484004 + ... + 587426.

It is an arithmetic number, because the mean of its divisors is an integer number (4180915200).

Almost surely, 2^55405252445 is an apocalyptic number.

It is an amenable number.

55405252445 is a deficient number, since it is larger than the sum of its proper divisors (11489390755).

55405252445 is a wasteful number, since it uses less digits than its factorization.

55405252445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104084.

The product of its (nonzero) digits is 800000, while the sum is 41.

The spelling of 55405252445 in words is "fifty-five billion, four hundred five million, two hundred fifty-two thousand, four hundred forty-five".