207552139 has 2 divisors, whose sum is σ = 207552140. Its totient is φ = 207552138.

The previous prime is 207552119. The next prime is 207552179. The reversal of 207552139 is 931255702.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-207552139 is a prime.

It is not a weakly prime, because it can be changed into another prime (207552119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103776069 + 103776070.

It is an arithmetic number, because the mean of its divisors is an integer number (103776070).

Almost surely, 2^207552139 is an apocalyptic number.

207552139 is a deficient number, since it is larger than the sum of its proper divisors (1).

207552139 is an equidigital number, since it uses as much as digits as its factorization.

207552139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 207552139 is about 14406.6699483260. The cubic root of 207552139 is about 592.0736560335.

The spelling of 207552139 in words is "two hundred seven million, five hundred fifty-two thousand, one hundred thirty-nine".