61243183 has 2 divisors, whose sum is σ = 61243184. Its totient is φ = 61243182.

The previous prime is 61243139. The next prime is 61243199. The reversal of 61243183 is 38134216.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61243183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61243283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30621591 + 30621592.

It is an arithmetic number, because the mean of its divisors is an integer number (30621592).

Almost surely, 2^61243183 is an apocalyptic number.

61243183 is a deficient number, since it is larger than the sum of its proper divisors (1).

61243183 is an equidigital number, since it uses as much as digits as its factorization.

61243183 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 61243183 is about 7825.8023869760. The cubic root of 61243183 is about 394.1721335521.

Adding to 61243183 its reverse (38134216), we get a palindrome (99377399).

The spelling of 61243183 in words is "sixty-one million, two hundred forty-three thousand, one hundred eighty-three".