7001281 has 4 divisors (see below), whose sum is σ = 8001472. Its totient is φ = 6001092.

The previous prime is 7001279. The next prime is 7001287. The reversal of 7001281 is 1821007.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1821007 = 43 ⋅42349.

It is a cyclic number.

It is not a de Polignac number, because 7001281 - 2¹ = 7001279 is a prime.

It is a super-2 number, since 2×7001281² = 98035871281922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7001287) 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 3 ways as a sum of consecutive naturals, for example, 500085 + ... + 500098.

It is an arithmetic number, because the mean of its divisors is an integer number (2000368).

Almost surely, 2^7001281 is an apocalyptic number.

It is an amenable number.

7001281 is a deficient number, since it is larger than the sum of its proper divisors (1000191).

7001281 is a wasteful number, since it uses less digits than its factorization.

7001281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000190.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 7001281 is about 2645.9933862351. The cubic root of 7001281 is about 191.3047864457.

Adding to 7001281 its reverse (1821007), we get a palindrome (8822288).

The spelling of 7001281 in words is "seven million, one thousand, two hundred eighty-one".