169139053 has 2 divisors, whose sum is σ = 169139054. Its totient is φ = 169139052.

The previous prime is 169139051. The next prime is 169139057. The reversal of 169139053 is 350931961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122722084 + 46416969 = 11078^2 + 6813^2 .

It is an emirp because it is prime and its reverse (350931961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 169139053 - 2¹ = 169139051 is a prime.

It is a super-4 number, since 4×169139053⁴ (a number of 34 digits) contains 4444 as substring.

Together with 169139051, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (169139051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84569526 + 84569527.

It is an arithmetic number, because the mean of its divisors is an integer number (84569527).

Almost surely, 2^169139053 is an apocalyptic number.

It is an amenable number.

169139053 is a deficient number, since it is larger than the sum of its proper divisors (1).

169139053 is an equidigital number, since it uses as much as digits as its factorization.

169139053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 169139053 is about 13005.3470926385. The cubic root of 169139053 is about 553.0290754441.

The spelling of 169139053 in words is "one hundred sixty-nine million, one hundred thirty-nine thousand, fifty-three".