220552139 has 2 divisors, whose sum is σ = 220552140. Its totient is φ = 220552138.

The previous prime is 220552103. The next prime is 220552219. The reversal of 220552139 is 931255022.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220552139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220552439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110276069 + 110276070.

It is an arithmetic number, because the mean of its divisors is an integer number (110276070).

Almost surely, 2^220552139 is an apocalyptic number.

220552139 is a deficient number, since it is larger than the sum of its proper divisors (1).

220552139 is an equidigital number, since it uses as much as digits as its factorization.

220552139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 220552139 is about 14850.9979125983. The cubic root of 220552139 is about 604.1856758146.

The spelling of 220552139 in words is "two hundred twenty million, five hundred fifty-two thousand, one hundred thirty-nine".