55163232505 has 8 divisors (see below), whose sum is σ = 66208550472. Its totient is φ = 44122138368.

The previous prime is 55163232491. The next prime is 55163232517. The reversal of 55163232505 is 50523236155.

It can be written as a sum of positive squares in 4 ways, for example, as 12464382736 + 42698849769 = 111644^2 + 206637^2 .

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 55163232505 - 2¹³ = 55163224313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1027152 + ... + 1079521.

It is an arithmetic number, because the mean of its divisors is an integer number (8276068809).

Almost surely, 2^55163232505 is an apocalyptic number.

It is an amenable number.

55163232505 is a deficient number, since it is larger than the sum of its proper divisors (11045317967).

55163232505 is a wasteful number, since it uses less digits than its factorization.

55163232505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111915.

The product of its (nonzero) digits is 135000, while the sum is 37.

The spelling of 55163232505 in words is "fifty-five billion, one hundred sixty-three million, two hundred thirty-two thousand, five hundred five".