161054117 has 4 divisors (see below), whose sum is σ = 184061856. Its totient is φ = 138046380.

The previous prime is 161054111. The next prime is 161054123. The reversal of 161054117 is 711450161.

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, and also an emirpimes, since its reverse is a distinct semiprime: 711450161 = 101 ⋅7044061.

It is an interprime number because it is at equal distance from previous prime (161054111) and next prime (161054123).

It is a cyclic number.

It is not a de Polignac number, because 161054117 - 2⁶ = 161054053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161054111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11503859 + ... + 11503872.

It is an arithmetic number, because the mean of its divisors is an integer number (46015464).

Almost surely, 2^161054117 is an apocalyptic number.

It is an amenable number.

161054117 is a deficient number, since it is larger than the sum of its proper divisors (23007739).

161054117 is an equidigital number, since it uses as much as digits as its factorization.

161054117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23007738.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 161054117 is about 12690.7098698221. The cubic root of 161054117 is about 544.0731287305.

The spelling of 161054117 in words is "one hundred sixty-one million, fifty-four thousand, one hundred seventeen".