61335601 has 2 divisors, whose sum is σ = 61335602. Its totient is φ = 61335600.

The previous prime is 61335563. The next prime is 61335613. The reversal of 61335601 is 10653316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61230625 + 104976 = 7825^2 + 324^2 .

It is a cyclic number.

It is not a de Polignac number, because 61335601 - 2¹¹ = 61333553 is a prime.

It is not a weakly prime, because it can be changed into another prime (61335671) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30667800 + 30667801.

It is an arithmetic number, because the mean of its divisors is an integer number (30667801).

Almost surely, 2^61335601 is an apocalyptic number.

It is an amenable number.

61335601 is a deficient number, since it is larger than the sum of its proper divisors (1).

61335601 is an equidigital number, since it uses as much as digits as its factorization.

61335601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 61335601 is about 7831.7048590968. The cubic root of 61335601 is about 394.3703068552.

Adding to 61335601 its reverse (10653316), we get a palindrome (71988917).

The spelling of 61335601 in words is "sixty-one million, three hundred thirty-five thousand, six hundred one".