161672053 has 2 divisors, whose sum is σ = 161672054. Its totient is φ = 161672052.

The previous prime is 161672051. The next prime is 161672059. The reversal of 161672053 is 350276161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159592689 + 2079364 = 12633^2 + 1442^2 .

It is a cyclic number.

It is not a de Polignac number, because 161672053 - 2¹ = 161672051 is a prime.

It is a super-2 number, since 2×161672053² = 52275705442469618, which contains 22 as substring.

Together with 161672051, 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 (161672051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80836026 + 80836027.

It is an arithmetic number, because the mean of its divisors is an integer number (80836027).

Almost surely, 2^161672053 is an apocalyptic number.

It is an amenable number.

161672053 is a deficient number, since it is larger than the sum of its proper divisors (1).

161672053 is an equidigital number, since it uses as much as digits as its factorization.

161672053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 161672053 is about 12715.0325599269. The cubic root of 161672053 is about 544.7680779613.

The spelling of 161672053 in words is "one hundred sixty-one million, six hundred seventy-two thousand, fifty-three".