55216085573 has 32 divisors (see below), whose sum is σ = 63830490240. Its totient is φ = 47237333760.

The previous prime is 55216085567. The next prime is 55216085593. The reversal of 55216085573 is 37558061255.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55216085573 - 2¹² = 55216081477 is a prime.

It is a super-2 number, since 2×55216085573² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55216085543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21592811 + ... + 21595367.

It is an arithmetic number, because the mean of its divisors is an integer number (1994702820).

Almost surely, 2^55216085573 is an apocalyptic number.

It is an amenable number.

55216085573 is a deficient number, since it is larger than the sum of its proper divisors (8614404667).

55216085573 is a wasteful number, since it uses less digits than its factorization.

55216085573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237.

The product of its (nonzero) digits is 1260000, while the sum is 47.

The spelling of 55216085573 in words is "fifty-five billion, two hundred sixteen million, eighty-five thousand, five hundred seventy-three".