726172055 has 16 divisors (see below), whose sum is σ = 1028020224. Its totient is φ = 481883040.

The previous prime is 726172049. The next prime is 726172067. The reversal of 726172055 is 550271627.

It is a happy number.

It is not a de Polignac number, because 726172055 - 2⁶ = 726171991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333557 + ... + 335726.

It is an arithmetic number, because the mean of its divisors is an integer number (64251264).

Almost surely, 2^726172055 is an apocalyptic number.

726172055 is a deficient number, since it is larger than the sum of its proper divisors (301848169).

726172055 is a wasteful number, since it uses less digits than its factorization.

726172055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669326.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 726172055 is about 26947.5797614554. The cubic root of 726172055 is about 898.8347285460.

The spelling of 726172055 in words is "seven hundred twenty-six million, one hundred seventy-two thousand, fifty-five".