2155250311 has 2 divisors, whose sum is σ = 2155250312. Its totient is φ = 2155250310.

The previous prime is 2155250297. The next prime is 2155250347. The reversal of 2155250311 is 1130525512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2155250311 - 2¹⁵ = 2155217543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2155251311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077625155 + 1077625156.

It is an arithmetic number, because the mean of its divisors is an integer number (1077625156).

Almost surely, 2^2155250311 is an apocalyptic number.

2155250311 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155250311 is an equidigital number, since it uses as much as digits as its factorization.

2155250311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 2155250311 is about 46424.6735152763. The cubic root of 2155250311 is about 1291.7126284267.

Adding to 2155250311 its reverse (1130525512), we get a palindrome (3285775823).

The spelling of 2155250311 in words is "two billion, one hundred fifty-five million, two hundred fifty thousand, three hundred eleven".