79961503 has 2 divisors, whose sum is σ = 79961504. Its totient is φ = 79961502.

The previous prime is 79961491. The next prime is 79961543. The reversal of 79961503 is 30516997.

It is an a-pointer prime, because the next prime (79961543) can be obtained adding 79961503 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79961503 - 2¹⁷ = 79830431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79961543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39980751 + 39980752.

It is an arithmetic number, because the mean of its divisors is an integer number (39980752).

Almost surely, 2^79961503 is an apocalyptic number.

79961503 is a deficient number, since it is larger than the sum of its proper divisors (1).

79961503 is an equidigital number, since it uses as much as digits as its factorization.

79961503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 79961503 is about 8942.1196033155. The cubic root of 79961503 is about 430.8178108567.

The spelling of 79961503 in words is "seventy-nine million, nine hundred sixty-one thousand, five hundred three".