55125440001 has 8 divisors (see below), whose sum is σ = 81667318560. Its totient is φ = 36750293316.

The previous prime is 55125439991. The next prime is 55125440023. The reversal of 55125440001 is 10004452155.

55125440001 is a `hidden beast` number, since 5 + 5 + 1 + 254 + 400 + 0 + 1 = 666.

It is not a de Polignac number, because 55125440001 - 2²³ = 55117051393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2041682963 = 55125440001 / (5 + 5 + 1 + 2 + 5 + 4 + 4 + 0 + 0 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (55125440101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020841455 + ... + 1020841508.

It is an arithmetic number, because the mean of its divisors is an integer number (10208414820).

Almost surely, 2^55125440001 is an apocalyptic number.

It is an amenable number.

55125440001 is a deficient number, since it is larger than the sum of its proper divisors (26541878559).

55125440001 is a wasteful number, since it uses less digits than its factorization.

55125440001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041682972 (or 2041682966 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 55125440001 its reverse (10004452155), we get a palindrome (65129892156).

The spelling of 55125440001 in words is "fifty-five billion, one hundred twenty-five million, four hundred forty thousand, one".