20161337 has 32 divisors (see below), whose sum is σ = 26484480. Its totient is φ = 14929920.

The previous prime is 20161327. The next prime is 20161343. The reversal of 20161337 is 73316102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20161337 - 2⁴ = 20161321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20161327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83537 + ... + 83777.

It is an arithmetic number, because the mean of its divisors is an integer number (827640).

Almost surely, 2^20161337 is an apocalyptic number.

It is an amenable number.

20161337 is a deficient number, since it is larger than the sum of its proper divisors (6323143).

20161337 is a wasteful number, since it uses less digits than its factorization.

20161337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 20161337 is about 4490.1377484438. The cubic root of 20161337 is about 272.1697010866.

Adding to 20161337 its reverse (73316102), we get a palindrome (93477439).

The spelling of 20161337 in words is "twenty million, one hundred sixty-one thousand, three hundred thirty-seven".