7188481 has 2 divisors, whose sum is σ = 7188482. Its totient is φ = 7188480.

The previous prime is 7188457. The next prime is 7188499. The reversal of 7188481 is 1848817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6548481 + 640000 = 2559^2 + 800^2 .

It is a cyclic number.

It is not a de Polignac number, because 7188481 - 2⁵ = 7188449 is a prime.

It is a super-2 number, since 2×7188481² = 103348518174722, which contains 22 as substring.

7188481 is a lucky number.

It is equal to p₄₈₈₅₉₃ and since 7188481 and 488593 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7188481.

It is not a weakly prime, because it can be changed into another prime (7188431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3594240 + 3594241.

It is an arithmetic number, because the mean of its divisors is an integer number (3594241).

It is a Proth number, since it is equal to 1755 ⋅ 2¹² + 1 and 1755 < 2¹².

Almost surely, 2^7188481 is an apocalyptic number.

It is an amenable number.

7188481 is a deficient number, since it is larger than the sum of its proper divisors (1).

7188481 is an equidigital number, since it uses as much as digits as its factorization.

7188481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14336, while the sum is 37.

The square root of 7188481 is about 2681.1342748919. The cubic root of 7188481 is about 192.9948453615.

The spelling of 7188481 in words is "seven million, one hundred eighty-eight thousand, four hundred eighty-one".