163522637 has 12 divisors (see below), whose sum is σ = 169646580. Its totient is φ = 157597440.

The previous prime is 163522633. The next prime is 163522651. The reversal of 163522637 is 736225361.

It can be written as a sum of positive squares in 6 ways, for example, as 24542116 + 138980521 = 4954^2 + 11789^2 .

It is not a de Polignac number, because 163522637 - 2² = 163522633 is a prime.

It is a super-2 number, since 2×163522637² = 53479305622867538, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163522597 and 163522606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163522631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149063 + ... + 150155.

It is an arithmetic number, because the mean of its divisors is an integer number (14137215).

Almost surely, 2^163522637 is an apocalyptic number.

It is an amenable number.

163522637 is a deficient number, since it is larger than the sum of its proper divisors (6123943).

163522637 is an equidigital number, since it uses as much as digits as its factorization.

163522637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1223 counting only the distinct ones).

The product of its digits is 45360, while the sum is 35.

The square root of 163522637 is about 12787.5969986546. The cubic root of 163522637 is about 546.8387652596.

Adding to 163522637 its reverse (736225361), we get a palindrome (899747998).

The spelling of 163522637 in words is "one hundred sixty-three million, five hundred twenty-two thousand, six hundred thirty-seven".