69957161 has 4 divisors (see below), whose sum is σ = 70029312. Its totient is φ = 69885012.

The previous prime is 69957157. The next prime is 69957163. The reversal of 69957161 is 16175996.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69957161 - 2² = 69957157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (69957163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34601 + ... + 36566.

It is an arithmetic number, because the mean of its divisors is an integer number (17507328).

Almost surely, 2^69957161 is an apocalyptic number.

It is an amenable number.

69957161 is a deficient number, since it is larger than the sum of its proper divisors (72151).

69957161 is an equidigital number, since it uses as much as digits as its factorization.

69957161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72150.

The product of its digits is 102060, while the sum is 44.

The square root of 69957161 is about 8364.0397536119. The cubic root of 69957161 is about 412.0444405671.

The spelling of 69957161 in words is "sixty-nine million, nine hundred fifty-seven thousand, one hundred sixty-one".