55177238189 has 8 divisors (see below), whose sum is σ = 56078490648. Its totient is φ = 54282945600.

The previous prime is 55177238183. The next prime is 55177238191. The reversal of 55177238189 is 98183277155.

It can be written as a sum of positive squares in 4 ways, for example, as 2980068100 + 52197170089 = 54590^2 + 228467^2 .

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 55177238189 - 2¹² = 55177234093 is a prime.

It is a super-2 number, since 2×55177238189² (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 (55177238183) 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, 1723982 + ... + 1755695.

It is an arithmetic number, because the mean of its divisors is an integer number (7009811331).

Almost surely, 2^55177238189 is an apocalyptic number.

It is an amenable number.

55177238189 is a deficient number, since it is larger than the sum of its proper divisors (901252459).

55177238189 is a wasteful number, since it uses less digits than its factorization.

55177238189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479935.

The product of its digits is 4233600, while the sum is 56.

The spelling of 55177238189 in words is "fifty-five billion, one hundred seventy-seven million, two hundred thirty-eight thousand, one hundred eighty-nine".