55405651261 has 8 divisors (see below), whose sum is σ = 56078354304. Its totient is φ = 54733071360.

The previous prime is 55405651253. The next prime is 55405651283. The reversal of 55405651261 is 16215650455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55405651261 - 2³ = 55405651253 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 (55405652261) 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, 1145020 + ... + 1192426.

It is an arithmetic number, because the mean of its divisors is an integer number (7009794288).

Almost surely, 2^55405651261 is an apocalyptic number.

It is an amenable number.

55405651261 is a deficient number, since it is larger than the sum of its proper divisors (672703043).

55405651261 is a wasteful number, since it uses less digits than its factorization.

55405651261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61571.

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 55405651261 in words is "fifty-five billion, four hundred five million, six hundred fifty-one thousand, two hundred sixty-one".