7531913 has 2 divisors, whose sum is σ = 7531914. Its totient is φ = 7531912.

The previous prime is 7531897. The next prime is 7531919. The reversal of 7531913 is 3191357.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5257849 + 2274064 = 2293^2 + 1508^2 .

It is a cyclic number.

It is not a de Polignac number, because 7531913 - 2⁴ = 7531897 is a prime.

It is not a weakly prime, because it can be changed into another prime (7531919) 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, 3765956 + 3765957.

It is an arithmetic number, because the mean of its divisors is an integer number (3765957).

Almost surely, 2^7531913 is an apocalyptic number.

It is an amenable number.

7531913 is a deficient number, since it is larger than the sum of its proper divisors (1).

7531913 is an equidigital number, since it uses as much as digits as its factorization.

7531913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2835, while the sum is 29.

The square root of 7531913 is about 2744.4330926441. The cubic root of 7531913 is about 196.0206229168.

The spelling of 7531913 in words is "seven million, five hundred thirty-one thousand, nine hundred thirteen".