61132021 has 2 divisors, whose sum is σ = 61132022. Its totient is φ = 61132020.

The previous prime is 61131979. The next prime is 61132129. The reversal of 61132021 is 12023116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52041796 + 9090225 = 7214^2 + 3015^2 .

It is a cyclic number.

It is not a de Polignac number, because 61132021 - 2⁷ = 61131893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61131986 and 61132004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61132921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30566010 + 30566011.

It is an arithmetic number, because the mean of its divisors is an integer number (30566011).

Almost surely, 2^61132021 is an apocalyptic number.

It is an amenable number.

61132021 is a deficient number, since it is larger than the sum of its proper divisors (1).

61132021 is an equidigital number, since it uses as much as digits as its factorization.

61132021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 61132021 is about 7818.6968863104. The cubic root of 61132021 is about 393.9335029109.

Adding to 61132021 its reverse (12023116), we get a palindrome (73155137).

The spelling of 61132021 in words is "sixty-one million, one hundred thirty-two thousand, twenty-one".