7999501 has 2 divisors, whose sum is σ = 7999502. Its totient is φ = 7999500.

The previous prime is 7999487. The next prime is 7999507. The reversal of 7999501 is 1059997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7986276 + 13225 = 2826^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 7999501 - 2¹⁹ = 7475213 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7999507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3999750 + 3999751.

It is an arithmetic number, because the mean of its divisors is an integer number (3999751).

Almost surely, 2^7999501 is an apocalyptic number.

It is an amenable number.

7999501 is a deficient number, since it is larger than the sum of its proper divisors (1).

7999501 is an equidigital number, since it uses as much as digits as its factorization.

7999501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25515, while the sum is 40.

The square root of 7999501 is about 2828.3389117996. The cubic root of 7999501 is about 199.9958415802.

The spelling of 7999501 in words is "seven million, nine hundred ninety-nine thousand, five hundred one".