763503121 has 2 divisors, whose sum is σ = 763503122. Its totient is φ = 763503120.

The previous prime is 763503113. The next prime is 763503151. The reversal of 763503121 is 121305367.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528310225 + 235192896 = 22985^2 + 15336^2 .

It is a cyclic number.

It is not a de Polignac number, because 763503121 - 2³ = 763503113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 763503121.

It is not a weakly prime, because it can be changed into another prime (763503151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 381751560 + 381751561.

It is an arithmetic number, because the mean of its divisors is an integer number (381751561).

Almost surely, 2^763503121 is an apocalyptic number.

It is an amenable number.

763503121 is a deficient number, since it is larger than the sum of its proper divisors (1).

763503121 is an equidigital number, since it uses as much as digits as its factorization.

763503121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 763503121 is about 27631.5602346303. The cubic root of 763503121 is about 913.9805186041.

Adding to 763503121 its reverse (121305367), we get a palindrome (884808488).

The spelling of 763503121 in words is "seven hundred sixty-three million, five hundred three thousand, one hundred twenty-one".