2115402451 has 2 divisors, whose sum is σ = 2115402452. Its totient is φ = 2115402450.

The previous prime is 2115402439. The next prime is 2115402467. The reversal of 2115402451 is 1542045112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2115402451 - 2¹¹ = 2115400403 is a prime.

It is not a weakly prime, because it can be changed into another prime (2115402251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1057701225 + 1057701226.

It is an arithmetic number, because the mean of its divisors is an integer number (1057701226).

Almost surely, 2^2115402451 is an apocalyptic number.

2115402451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115402451 is an equidigital number, since it uses as much as digits as its factorization.

2115402451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2115402451 is about 45993.5044435625. The cubic root of 2115402451 is about 1283.7023445651.

Adding to 2115402451 its reverse (1542045112), we get a palindrome (3657447563).

The spelling of 2115402451 in words is "two billion, one hundred fifteen million, four hundred two thousand, four hundred fifty-one".