166553039 has 2 divisors, whose sum is σ = 166553040. Its totient is φ = 166553038.

The previous prime is 166553033. The next prime is 166553071. The reversal of 166553039 is 930355661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166553039 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 166552993 and 166553011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166553033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83276519 + 83276520.

It is an arithmetic number, because the mean of its divisors is an integer number (83276520).

Almost surely, 2^166553039 is an apocalyptic number.

166553039 is a deficient number, since it is larger than the sum of its proper divisors (1).

166553039 is an equidigital number, since it uses as much as digits as its factorization.

166553039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 166553039 is about 12905.5429564199. The cubic root of 166553039 is about 550.1961162874.

The spelling of 166553039 in words is "one hundred sixty-six million, five hundred fifty-three thousand, thirty-nine".