2215126157 has 2 divisors, whose sum is σ = 2215126158. Its totient is φ = 2215126156.

The previous prime is 2215126139. The next prime is 2215126187. The reversal of 2215126157 is 7516215122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2207026441 + 8099716 = 46979^2 + 2846^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215126157 - 2¹² = 2215122061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2215126127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107563078 + 1107563079.

It is an arithmetic number, because the mean of its divisors is an integer number (1107563079).

Almost surely, 2^2215126157 is an apocalyptic number.

It is an amenable number.

2215126157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215126157 is an equidigital number, since it uses as much as digits as its factorization.

2215126157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 32.

The square root of 2215126157 is about 47065.1267606919. The cubic root of 2215126157 is about 1303.5653914818.

The spelling of 2215126157 in words is "two billion, two hundred fifteen million, one hundred twenty-six thousand, one hundred fifty-seven".