69161249 has 2 divisors, whose sum is σ = 69161250. Its totient is φ = 69161248.

The previous prime is 69161231. The next prime is 69161303. The reversal of 69161249 is 94216196.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49801249 + 19360000 = 7057^2 + 4400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69161249 is a prime.

It is not a weakly prime, because it can be changed into another prime (69161749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34580624 + 34580625.

It is an arithmetic number, because the mean of its divisors is an integer number (34580625).

Almost surely, 2^69161249 is an apocalyptic number.

It is an amenable number.

69161249 is a deficient number, since it is larger than the sum of its proper divisors (1).

69161249 is an equidigital number, since it uses as much as digits as its factorization.

69161249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 38.

The square root of 69161249 is about 8316.3242481279. The cubic root of 69161249 is about 410.4758484656.

The spelling of 69161249 in words is "sixty-nine million, one hundred sixty-one thousand, two hundred forty-nine".