1000000055197 has 16 divisors (see below), whose sum is σ = 1185603471360. Its totient is φ = 831462148800.

The previous prime is 1000000055177. The next prime is 1000000055273. The reversal of 1000000055197 is 7915500000001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000000055197 is a prime.

It is a super-2 number, since 2×1000000055197² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000000055177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32062429 + ... + 32093602.

It is an arithmetic number, because the mean of its divisors is an integer number (74100216960).

Almost surely, 2^{1000000055197} is an apocalyptic number.

It is an amenable number.

1000000055197 is a deficient number, since it is larger than the sum of its proper divisors (185603416163).

1000000055197 is a wasteful number, since it uses less digits than its factorization.

1000000055197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64156164.

The product of its (nonzero) digits is 1575, while the sum is 28.

Adding to 1000000055197 its reverse (7915500000001), we get a palindrome (8915500055198).

The spelling of 1000000055197 in words is "one trillion, fifty-five thousand, one hundred ninety-seven".