7172001601 has 4 divisors (see below), whose sum is σ = 7178075604. Its totient is φ = 7165927600.

The previous prime is 7172001593. The next prime is 7172001607. The reversal of 7172001601 is 1061002717.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6789760000 + 382241601 = 82400^2 + 19551^2 .

It is a cyclic number.

It is not a de Polignac number, because 7172001601 - 2³ = 7172001593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7172001607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3035230 + ... + 3037591.

It is an arithmetic number, because the mean of its divisors is an integer number (1794518901).

Almost surely, 2^7172001601 is an apocalyptic number.

It is an amenable number.

7172001601 is a deficient number, since it is larger than the sum of its proper divisors (6074003).

7172001601 is a wasteful number, since it uses less digits than its factorization.

7172001601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6074002.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 7172001601 is about 84687.6708913405. The cubic root of 7172001601 is about 1928.4725402671.

The spelling of 7172001601 in words is "seven billion, one hundred seventy-two million, one thousand, six hundred one".