55011500001 has 10 divisors (see below), whose sum is σ = 82177672962. Its totient is φ = 36674333280.

The previous prime is 55011499967. The next prime is 55011500051. The reversal of 55011500001 is 10000511055.

55011500001 is a `hidden beast` number, since 550 + 115 + 0 + 0 + 0 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51336230625 + 3675269376 = 226575^2 + 60624^2 .

It is not a de Polignac number, because 55011500001 - 2¹⁵ = 55011467233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55011500051) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 339577080 + ... + 339577241.

Almost surely, 2^55011500001 is an apocalyptic number.

It is an amenable number.

55011500001 is a deficient number, since it is larger than the sum of its proper divisors (27166172961).

55011500001 is an equidigital number, since it uses as much as digits as its factorization.

55011500001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679154333 (or 679154324 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The spelling of 55011500001 in words is "fifty-five billion, eleven million, five hundred thousand, one".