2451121697 has 2 divisors, whose sum is σ = 2451121698. Its totient is φ = 2451121696.

The previous prime is 2451121681. The next prime is 2451121741. The reversal of 2451121697 is 7961211542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1972781056 + 478340641 = 44416^2 + 21871^2 .

It is a cyclic number.

It is not a de Polignac number, because 2451121697 - 2⁴ = 2451121681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2451121697.

It is not a weakly prime, because it can be changed into another prime (2451421697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1225560848 + 1225560849.

It is an arithmetic number, because the mean of its divisors is an integer number (1225560849).

Almost surely, 2^2451121697 is an apocalyptic number.

It is an amenable number.

2451121697 is a deficient number, since it is larger than the sum of its proper divisors (1).

2451121697 is an equidigital number, since it uses as much as digits as its factorization.

2451121697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 2451121697 is about 49508.8042372263. The cubic root of 2451121697 is about 1348.3054544771.

The spelling of 2451121697 in words is "two billion, four hundred fifty-one million, one hundred twenty-one thousand, six hundred ninety-seven".