2135456501 has 2 divisors, whose sum is σ = 2135456502. Its totient is φ = 2135456500.

The previous prime is 2135456473. The next prime is 2135456503. The reversal of 2135456501 is 1056545312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1088934001 + 1046522500 = 32999^2 + 32350^2 .

It is a cyclic number.

It is not a de Polignac number, because 2135456501 - 2⁶ = 2135456437 is a prime.

Together with 2135456503, 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 (2135456503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067728250 + 1067728251.

It is an arithmetic number, because the mean of its divisors is an integer number (1067728251).

Almost surely, 2^2135456501 is an apocalyptic number.

It is an amenable number.

2135456501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135456501 is an equidigital number, since it uses as much as digits as its factorization.

2135456501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 2135456501 is about 46210.9997836013. Note that the first 3 decimals coincide. The cubic root of 2135456501 is about 1287.7460995111.

The spelling of 2135456501 in words is "two billion, one hundred thirty-five million, four hundred fifty-six thousand, five hundred one".