54990375805 has 8 divisors (see below), whose sum is σ = 66004124472. Its totient is φ = 43981851648.

The previous prime is 54990375761. The next prime is 54990375809. The reversal of 54990375805 is 50857309945.

It can be written as a sum of positive squares in 4 ways, for example, as 23895285561 + 31095090244 = 154581^2 + 176338^2 .

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 54990375805 - 2¹⁹ = 54989851517 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 (54990375809) 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, 1282932 + ... + 1325101.

It is an arithmetic number, because the mean of its divisors is an integer number (8250515559).

Almost surely, 2^54990375805 is an apocalyptic number.

It is an amenable number.

54990375805 is a deficient number, since it is larger than the sum of its proper divisors (11013748667).

54990375805 is a wasteful number, since it uses less digits than its factorization.

54990375805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612255.

The product of its (nonzero) digits is 6804000, while the sum is 55.

The spelling of 54990375805 in words is "fifty-four billion, nine hundred ninety million, three hundred seventy-five thousand, eight hundred five".