2155712707 has 2 divisors, whose sum is σ = 2155712708. Its totient is φ = 2155712706.

The previous prime is 2155712683. The next prime is 2155712711. The reversal of 2155712707 is 7072175512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2155712707 - 2²³ = 2147324099 is a prime.

It is not a weakly prime, because it can be changed into another prime (2155712717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077856353 + 1077856354.

It is an arithmetic number, because the mean of its divisors is an integer number (1077856354).

Almost surely, 2^2155712707 is an apocalyptic number.

2155712707 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155712707 is an equidigital number, since it uses as much as digits as its factorization.

2155712707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34300, while the sum is 37.

The square root of 2155712707 is about 46429.6533155267. The cubic root of 2155712707 is about 1291.8049982147.

The spelling of 2155712707 in words is "two billion, one hundred fifty-five million, seven hundred twelve thousand, seven hundred seven".