55520669983 has 8 divisors (see below), whose sum is σ = 56630373696. Its totient is φ = 54413268000.

The previous prime is 55520669947. The next prime is 55520669987. The reversal of 55520669983 is 38996602555.

It is a happy number.

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 55520669983 - 2⁹ = 55520669471 is a prime.

It is a super-2 number, since 2×55520669983² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55520669987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526668 + ... + 623233.

It is an arithmetic number, because the mean of its divisors is an integer number (7078796712).

Almost surely, 2^55520669983 is an apocalyptic number.

55520669983 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

55520669983 is a deficient number, since it is larger than the sum of its proper divisors (1109703713).

55520669983 is a wasteful number, since it uses less digits than its factorization.

55520669983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150865.

The product of its (nonzero) digits is 17496000, while the sum is 58.

The spelling of 55520669983 in words is "fifty-five billion, five hundred twenty million, six hundred sixty-nine thousand, nine hundred eighty-three".