61235143 has 2 divisors, whose sum is σ = 61235144. Its totient is φ = 61235142.

The previous prime is 61235117. The next prime is 61235147. The reversal of 61235143 is 34153216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61235143 - 2¹³ = 61226951 is a prime.

It is equal to p_3631066 and since 61235143 and 3631066 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61235147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30617571 + 30617572.

It is an arithmetic number, because the mean of its divisors is an integer number (30617572).

Almost surely, 2^61235143 is an apocalyptic number.

61235143 is a deficient number, since it is larger than the sum of its proper divisors (1).

61235143 is an equidigital number, since it uses as much as digits as its factorization.

61235143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 61235143 is about 7825.2886847707. The cubic root of 61235143 is about 394.1548838355.

Adding to 61235143 its reverse (34153216), we get a palindrome (95388359).

The spelling of 61235143 in words is "sixty-one million, two hundred thirty-five thousand, one hundred forty-three".