7505149 has 2 divisors, whose sum is σ = 7505150. Its totient is φ = 7505148.

The previous prime is 7505129. The next prime is 7505159. The reversal of 7505149 is 9415057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7425625 + 79524 = 2725^2 + 282^2 .

It is a cyclic number.

It is not a de Polignac number, because 7505149 - 2⁷ = 7505021 is a prime.

7505149 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7505149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7505129) 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, 3752574 + 3752575.

It is an arithmetic number, because the mean of its divisors is an integer number (3752575).

Almost surely, 2^7505149 is an apocalyptic number.

It is an amenable number.

7505149 is a deficient number, since it is larger than the sum of its proper divisors (1).

7505149 is an equidigital number, since it uses as much as digits as its factorization.

7505149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 7505149 is about 2739.5527007159. The cubic root of 7505149 is about 195.7881665968.

The spelling of 7505149 in words is "seven million, five hundred five thousand, one hundred forty-nine".