2081552101 has 2 divisors, whose sum is σ = 2081552102. Its totient is φ = 2081552100.

The previous prime is 2081552093. The next prime is 2081552113. The reversal of 2081552101 is 1012551802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1405500100 + 676052001 = 37490^2 + 26001^2 .

It is a cyclic number.

It is not a de Polignac number, because 2081552101 - 2³ = 2081552093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2081552701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040776050 + 1040776051.

It is an arithmetic number, because the mean of its divisors is an integer number (1040776051).

Almost surely, 2^2081552101 is an apocalyptic number.

It is an amenable number.

2081552101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081552101 is an equidigital number, since it uses as much as digits as its factorization.

2081552101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 2081552101 is about 45624.0298636585. The cubic root of 2081552101 is about 1276.8182901660.

The spelling of 2081552101 in words is "two billion, eighty-one million, five hundred fifty-two thousand, one hundred one".