2101702451 has 2 divisors, whose sum is σ = 2101702452. Its totient is φ = 2101702450.

The previous prime is 2101702433. The next prime is 2101702459. The reversal of 2101702451 is 1542071012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101702451 is a prime.

It is not a weakly prime, because it can be changed into another prime (2101702459) 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, 1050851225 + 1050851226.

It is an arithmetic number, because the mean of its divisors is an integer number (1050851226).

Almost surely, 2^2101702451 is an apocalyptic number.

2101702451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101702451 is an equidigital number, since it uses as much as digits as its factorization.

2101702451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 2101702451 is about 45844.3284496567. The cubic root of 2101702451 is about 1280.9251228303.

Adding to 2101702451 its reverse (1542071012), we get a palindrome (3643773463).

The spelling of 2101702451 in words is "two billion, one hundred one million, seven hundred two thousand, four hundred fifty-one".