2156435101 has 2 divisors, whose sum is σ = 2156435102. Its totient is φ = 2156435100.

The previous prime is 2156435027. The next prime is 2156435107. The reversal of 2156435101 is 1015346512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2094435225 + 61999876 = 45765^2 + 7874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2156435101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2156435101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2156435107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078217550 + 1078217551.

It is an arithmetic number, because the mean of its divisors is an integer number (1078217551).

Almost surely, 2^2156435101 is an apocalyptic number.

It is an amenable number.

2156435101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156435101 is an equidigital number, since it uses as much as digits as its factorization.

2156435101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 2156435101 is about 46437.4321103138. The cubic root of 2156435101 is about 1291.9492796484.

It can be divided in two parts, 21564 and 35101, that added together give a palindrome (56665).

The spelling of 2156435101 in words is "two billion, one hundred fifty-six million, four hundred thirty-five thousand, one hundred one".