6997155201 has 9 divisors (see below), whose sum is σ = 10107364449. Its totient is φ = 4664602836.

The previous prime is 6997155181. The next prime is 6997155233. The reversal of 6997155201 is 1025517996.

The square root of 6997155201 is 83649.

It is a perfect power (a square), and thus also a powerful number.

6997155201 is a `hidden beast` number, since 6 + 9 + 97 + 1 + 552 + 0 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 6997155201 - 2⁷ = 6997155073 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6997155281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 237006 + ... + 264888.

Almost surely, 2^6997155201 is an apocalyptic number.

6997155201 is the 83649-th square number.

6997155201 is the 41825-th centered octagonal number.

It is an amenable number.

6997155201 is a deficient number, since it is larger than the sum of its proper divisors (3110209248).

6997155201 is an frugal number, since it uses more digits than its factorization.

6997155201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55772 (or 27886 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 45.

The cubic root of 6997155201 is about 1912.6720093401.

The spelling of 6997155201 in words is "six billion, nine hundred ninety-seven million, one hundred fifty-five thousand, two hundred one".