1297201501 has 4 divisors (see below), whose sum is σ = 1328840604. Its totient is φ = 1265562400.

The previous prime is 1297201487. The next prime is 1297201519. The reversal of 1297201501 is 1051027921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 333099001 + 964102500 = 18251^2 + 31050^2 .

It is a cyclic number.

It is not a de Polignac number, because 1297201501 - 2⁵ = 1297201469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1297201501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297201561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15819490 + ... + 15819571.

It is an arithmetic number, because the mean of its divisors is an integer number (332210151).

Almost surely, 2^1297201501 is an apocalyptic number.

It is an amenable number.

1297201501 is a deficient number, since it is larger than the sum of its proper divisors (31639103).

1297201501 is an equidigital number, since it uses as much as digits as its factorization.

1297201501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31639102.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 1297201501 is about 36016.6836479985. The cubic root of 1297201501 is about 1090.6091763574.

The spelling of 1297201501 in words is "one billion, two hundred ninety-seven million, two hundred one thousand, five hundred one".