167020261 has 2 divisors, whose sum is σ = 167020262. Its totient is φ = 167020260.

The previous prime is 167020177. The next prime is 167020267. The reversal of 167020261 is 162020761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141467236 + 25553025 = 11894^2 + 5055^2 .

It is a cyclic number.

It is not a de Polignac number, because 167020261 - 2¹⁷ = 166889189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167020267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83510130 + 83510131.

It is an arithmetic number, because the mean of its divisors is an integer number (83510131).

Almost surely, 2^167020261 is an apocalyptic number.

It is an amenable number.

167020261 is a deficient number, since it is larger than the sum of its proper divisors (1).

167020261 is an equidigital number, since it uses as much as digits as its factorization.

167020261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 167020261 is about 12923.6318811702. The cubic root of 167020261 is about 550.7101141701.

It can be divided in two parts, 167020 and 261, that added together give a square (167281 = 409²).

The spelling of 167020261 in words is "one hundred sixty-seven million, twenty thousand, two hundred sixty-one".