61200239 has 2 divisors, whose sum is σ = 61200240. Its totient is φ = 61200238.

The previous prime is 61200199. The next prime is 61200247. The reversal of 61200239 is 93200216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61200239 - 2¹² = 61196143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61200259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30600119 + 30600120.

It is an arithmetic number, because the mean of its divisors is an integer number (30600120).

Almost surely, 2^61200239 is an apocalyptic number.

61200239 is a deficient number, since it is larger than the sum of its proper divisors (1).

61200239 is an equidigital number, since it uses as much as digits as its factorization.

61200239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 61200239 is about 7823.0581616143. The cubic root of 61200239 is about 394.0799802417.

Subtracting from 61200239 its sum of digits (23), we obtain a palindrome (61200216).

The spelling of 61200239 in words is "sixty-one million, two hundred thousand, two hundred thirty-nine".