55405855901 has 16 divisors (see below), whose sum is σ = 63901838400. Its totient is φ = 47509545600.

The previous prime is 55405855889. The next prime is 55405855903. The reversal of 55405855901 is 10955850455.

55405855901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55405855901 - 2¹⁰ = 55405854877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55405855903) 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, 530960 + ... + 626681.

It is an arithmetic number, because the mean of its divisors is an integer number (3993864900).

Almost surely, 2^55405855901 is an apocalyptic number.

It is an amenable number.

55405855901 is a deficient number, since it is larger than the sum of its proper divisors (8495982499).

55405855901 is a wasteful number, since it uses less digits than its factorization.

55405855901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157900.

The product of its (nonzero) digits is 900000, while the sum is 47.

The spelling of 55405855901 in words is "fifty-five billion, four hundred five million, eight hundred fifty-five thousand, nine hundred one".