55518805261 has 8 divisors (see below), whose sum is σ = 55720484064. Its totient is φ = 55317210000.

The previous prime is 55518805259. The next prime is 55518805283. The reversal of 55518805261 is 16250881555.

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 55518805261 - 2¹ = 55518805259 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 (55518805061) 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, 1513386 + ... + 1549636.

It is an arithmetic number, because the mean of its divisors is an integer number (6965060508).

Almost surely, 2^55518805261 is an apocalyptic number.

It is an amenable number.

55518805261 is a deficient number, since it is larger than the sum of its proper divisors (201678803).

55518805261 is a wasteful number, since it uses less digits than its factorization.

55518805261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41771.

The product of its (nonzero) digits is 480000, while the sum is 46.

The spelling of 55518805261 in words is "fifty-five billion, five hundred eighteen million, eight hundred five thousand, two hundred sixty-one".