7530139 has 2 divisors, whose sum is σ = 7530140. Its totient is φ = 7530138.

The previous prime is 7530121. The next prime is 7530151. The reversal of 7530139 is 9310357.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7530139 - 2¹¹ = 7528091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7530119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3765069 + 3765070.

It is an arithmetic number, because the mean of its divisors is an integer number (3765070).

Almost surely, 2^7530139 is an apocalyptic number.

7530139 is a deficient number, since it is larger than the sum of its proper divisors (1).

7530139 is an equidigital number, since it uses as much as digits as its factorization.

7530139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 7530139 is about 2744.1098738935. The cubic root of 7530139 is about 196.0052320553.

The spelling of 7530139 in words is "seven million, five hundred thirty thousand, one hundred thirty-nine".