61901033 has 2 divisors, whose sum is σ = 61901034. Its totient is φ = 61901032.

The previous prime is 61901023. The next prime is 61901039. The reversal of 61901033 is 33010916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54567769 + 7333264 = 7387^2 + 2708^2 .

It is a cyclic number.

It is not a de Polignac number, because 61901033 - 2¹⁶ = 61835497 is a prime.

It is not a weakly prime, because it can be changed into another prime (61901039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30950516 + 30950517.

It is an arithmetic number, because the mean of its divisors is an integer number (30950517).

Almost surely, 2^61901033 is an apocalyptic number.

It is an amenable number.

61901033 is a deficient number, since it is larger than the sum of its proper divisors (1).

61901033 is an equidigital number, since it uses as much as digits as its factorization.

61901033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 61901033 is about 7867.7209533638. The cubic root of 61901033 is about 395.5784570647.

Adding to 61901033 its reverse (33010916), we get a palindrome (94911949).

The spelling of 61901033 in words is "sixty-one million, nine hundred one thousand, thirty-three".