7881201 has 6 divisors (see below), whose sum is σ = 11383970. Its totient is φ = 5254128.

The previous prime is 7881193. The next prime is 7881221. The reversal of 7881201 is 1021887.

It can be written as a sum of positive squares in only one way, i.e., 5475600 + 2405601 = 2340^2 + 1551^2 .

It is not a de Polignac number, because 7881201 - 2³ = 7881193 is a prime.

It is a super-2 number, since 2×7881201² = 124226658404802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7881221) 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 5 ways as a sum of consecutive naturals, for example, 437836 + ... + 437853.

Almost surely, 2^7881201 is an apocalyptic number.

It is an amenable number.

7881201 is a deficient number, since it is larger than the sum of its proper divisors (3502769).

7881201 is a wasteful number, since it uses less digits than its factorization.

7881201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875695 (or 875692 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 7881201 is about 2807.3476806409. The cubic root of 7881201 is about 199.0050670831.

The spelling of 7881201 in words is "seven million, eight hundred eighty-one thousand, two hundred one".