7148917 has 2 divisors, whose sum is σ = 7148918. Its totient is φ = 7148916.

The previous prime is 7148899. The next prime is 7148923. The reversal of 7148917 is 7198417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5058001 + 2090916 = 2249^2 + 1446^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7148917 is a prime.

It is a super-2 number, since 2×7148917² = 102214028545778, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7148927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3574458 + 3574459.

It is an arithmetic number, because the mean of its divisors is an integer number (3574459).

Almost surely, 2^7148917 is an apocalyptic number.

It is an amenable number.

7148917 is a deficient number, since it is larger than the sum of its proper divisors (1).

7148917 is an equidigital number, since it uses as much as digits as its factorization.

7148917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 37.

The square root of 7148917 is about 2673.7458742371. The cubic root of 7148917 is about 192.6401251072.

The spelling of 7148917 in words is "seven million, one hundred forty-eight thousand, nine hundred seventeen".