161357227 has 8 divisors (see below), whose sum is σ = 163848960. Its totient is φ = 158871720.

The previous prime is 161357197. The next prime is 161357243. The reversal of 161357227 is 722753161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161357227 - 2¹¹ = 161355179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161357192 and 161357201.

It is not an unprimeable number, because it can be changed into a prime (161357257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92788 + ... + 94510.

It is an arithmetic number, because the mean of its divisors is an integer number (20481120).

Almost surely, 2^161357227 is an apocalyptic number.

161357227 is a deficient number, since it is larger than the sum of its proper divisors (2491733).

161357227 is a wasteful number, since it uses less digits than its factorization.

161357227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113.

The product of its digits is 17640, while the sum is 34.

The square root of 161357227 is about 12702.6464565460. The cubic root of 161357227 is about 544.4142369638.

The spelling of 161357227 in words is "one hundred sixty-one million, three hundred fifty-seven thousand, two hundred twenty-seven".