55772049185 has 8 divisors (see below), whose sum is σ = 66930018216. Its totient is φ = 44615266560.

The previous prime is 55772049173. The next prime is 55772049187. The reversal of 55772049185 is 58194027755.

It can be written as a sum of positive squares in 4 ways, for example, as 849314449 + 54922734736 = 29143^2 + 234356^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55772049185 - 2²⁰ = 55771000609 is a prime.

It is a super-2 number, since 2×55772049185² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55772049187) 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, 189674 + ... + 384083.

It is an arithmetic number, because the mean of its divisors is an integer number (8366252277).

Almost surely, 2^55772049185 is an apocalyptic number.

It is an amenable number.

55772049185 is a deficient number, since it is larger than the sum of its proper divisors (11157969031).

55772049185 is a wasteful number, since it uses less digits than its factorization.

55772049185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593203.

The product of its (nonzero) digits is 3528000, while the sum is 53.

The spelling of 55772049185 in words is "fifty-five billion, seven hundred seventy-two million, forty-nine thousand, one hundred eighty-five".