2153602081 has 2 divisors, whose sum is σ = 2153602082. Its totient is φ = 2153602080.

The previous prime is 2153602043. The next prime is 2153602103. The reversal of 2153602081 is 1802063512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1222131681 + 931470400 = 34959^2 + 30520^2 .

It is a cyclic number.

It is not a de Polignac number, because 2153602081 - 2³¹ = 6118433 is a prime.

It is a super-2 number, since 2×2153602081² = 9276003846575061122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2153602001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076801040 + 1076801041.

It is an arithmetic number, because the mean of its divisors is an integer number (1076801041).

Almost surely, 2^2153602081 is an apocalyptic number.

It is an amenable number.

2153602081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153602081 is an equidigital number, since it uses as much as digits as its factorization.

2153602081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2153602081 is about 46406.9184605054. The cubic root of 2153602081 is about 1291.3832649101.

Adding to 2153602081 its reverse (1802063512), we get a palindrome (3955665593).

The spelling of 2153602081 in words is "two billion, one hundred fifty-three million, six hundred two thousand, eighty-one".