161610522 has 8 divisors (see below), whose sum is σ = 323221056. Its totient is φ = 53870172.

The previous prime is 161610511. The next prime is 161610557. The reversal of 161610522 is 225016161.

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

161610522 is an admirable number.

It is a super-2 number, since 2×161610522² = 52235921642224968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161610492 and 161610501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13467538 + ... + 13467549.

It is an arithmetic number, because the mean of its divisors is an integer number (40402632).

Almost surely, 2^161610522 is an apocalyptic number.

161610522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161610522 is a wasteful number, since it uses less digits than its factorization.

161610522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26935092.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 161610522 is about 12712.6127133646. The cubic root of 161610522 is about 544.6989578354.

Adding to 161610522 its reverse (225016161), we get a palindrome (386626683).

The spelling of 161610522 in words is "one hundred sixty-one million, six hundred ten thousand, five hundred twenty-two".