2153532461 has 2 divisors, whose sum is σ = 2153532462. Its totient is φ = 2153532460.

The previous prime is 2153532439. The next prime is 2153532487. The reversal of 2153532461 is 1642353512.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2153516836 + 15625 = 46406^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 2153532461 - 2²² = 2149338157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2153532401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076766230 + 1076766231.

It is an arithmetic number, because the mean of its divisors is an integer number (1076766231).

Almost surely, 2^2153532461 is an apocalyptic number.

It is an amenable number.

2153532461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153532461 is an equidigital number, since it uses as much as digits as its factorization.

2153532461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

The square root of 2153532461 is about 46406.1683507699. The cubic root of 2153532461 is about 1291.3693491435.

Adding to 2153532461 its reverse (1642353512), we get a palindrome (3795885973).

The spelling of 2153532461 in words is "two billion, one hundred fifty-three million, five hundred thirty-two thousand, four hundred sixty-one".