55545372207 has 24 divisors (see below), whose sum is σ = 86492528304. Its totient is φ = 34146710784.

The previous prime is 55545372199. The next prime is 55545372247. The reversal of 55545372207 is 70227354555.

55545372207 is a `hidden beast` number, since 5 + 554 + 5 + 3 + 72 + 20 + 7 = 666.

It is not a de Polignac number, because 55545372207 - 2³ = 55545372199 is a prime.

It is a super-2 number, since 2×55545372207² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55545372247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128653 + ... + 357270.

It is an arithmetic number, because the mean of its divisors is an integer number (3603855346).

Almost surely, 2^55545372207 is an apocalyptic number.

55545372207 is a deficient number, since it is larger than the sum of its proper divisors (30947156097).

55545372207 is a wasteful number, since it uses less digits than its factorization.

55545372207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486919 (or 486916 counting only the distinct ones).

The product of its (nonzero) digits is 1470000, while the sum is 45.

It can be divided in two parts, 5554 and 5372207, that added together give a square (5377761 = 2319²).

The spelling of 55545372207 in words is "fifty-five billion, five hundred forty-five million, three hundred seventy-two thousand, two hundred seven".