2157151751 has 2 divisors, whose sum is σ = 2157151752. Its totient is φ = 2157151750.

The previous prime is 2157151741. The next prime is 2157151753. The reversal of 2157151751 is 1571517512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2157151751 - 2¹⁴ = 2157135367 is a prime.

Together with 2157151753, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2157151753) 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, 1078575875 + 1078575876.

It is an arithmetic number, because the mean of its divisors is an integer number (1078575876).

Almost surely, 2^2157151751 is an apocalyptic number.

2157151751 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157151751 is an equidigital number, since it uses as much as digits as its factorization.

2157151751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12250, while the sum is 35.

The square root of 2157151751 is about 46445.1477659400. The cubic root of 2157151751 is about 1292.0923820158.

The spelling of 2157151751 in words is "two billion, one hundred fifty-seven million, one hundred fifty-one thousand, seven hundred fifty-one".