1006139501 has 2 divisors, whose sum is σ = 1006139502. Its totient is φ = 1006139500.

The previous prime is 1006139461. The next prime is 1006139513. The reversal of 1006139501 is 1059316001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 711502276 + 294637225 = 26674^2 + 17165^2 .

It is an emirp because it is prime and its reverse (1059316001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1006139501 - 2⁶ = 1006139437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1006189501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503069750 + 503069751.

It is an arithmetic number, because the mean of its divisors is an integer number (503069751).

Almost surely, 2^1006139501 is an apocalyptic number.

It is an amenable number.

1006139501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006139501 is an equidigital number, since it uses as much as digits as its factorization.

1006139501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 1006139501 is about 31719.7020950702. The cubic root of 1006139501 is about 1002.0423263966.

The spelling of 1006139501 in words is "one billion, six million, one hundred thirty-nine thousand, five hundred one".