61542233 has 2 divisors, whose sum is σ = 61542234. Its totient is φ = 61542232.

The previous prime is 61542199. The next prime is 61542241. The reversal of 61542233 is 33224516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61512649 + 29584 = 7843^2 + 172^2 .

It is a cyclic number.

It is not a de Polignac number, because 61542233 - 2¹⁶ = 61476697 is a prime.

It is not a weakly prime, because it can be changed into another prime (61542253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30771116 + 30771117.

It is an arithmetic number, because the mean of its divisors is an integer number (30771117).

Almost surely, 2^61542233 is an apocalyptic number.

It is an amenable number.

61542233 is a deficient number, since it is larger than the sum of its proper divisors (1).

61542233 is an equidigital number, since it uses as much as digits as its factorization.

61542233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 26.

The square root of 61542233 is about 7844.8857862942. The cubic root of 61542233 is about 394.8126719496.

Adding to 61542233 its reverse (33224516), we get a palindrome (94766749).

The spelling of 61542233 in words is "sixty-one million, five hundred forty-two thousand, two hundred thirty-three".