61550033 has 2 divisors, whose sum is σ = 61550034. Its totient is φ = 61550032.

The previous prime is 61549967. The next prime is 61550053. The reversal of 61550033 is 33005516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57501889 + 4048144 = 7583^2 + 2012^2 .

It is a cyclic number.

It is not a de Polignac number, because 61550033 - 2¹² = 61545937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61549990 and 61550008.

It is not a weakly prime, because it can be changed into another prime (61550053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30775016 + 30775017.

It is an arithmetic number, because the mean of its divisors is an integer number (30775017).

Almost surely, 2^61550033 is an apocalyptic number.

It is an amenable number.

61550033 is a deficient number, since it is larger than the sum of its proper divisors (1).

61550033 is an equidigital number, since it uses as much as digits as its factorization.

61550033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 61550033 is about 7845.3829097119. The cubic root of 61550033 is about 394.8293510581.

Adding to 61550033 its reverse (33005516), we get a palindrome (94555549).

The spelling of 61550033 in words is "sixty-one million, five hundred fifty thousand, thirty-three".