151644 has 12 divisors (see below), whose sum is σ = 353864. Its totient is φ = 50544.

The previous prime is 151643. The next prime is 151651. The reversal of 151644 is 446151.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 151644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6307 + ... + 6330.

2¹⁵¹⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

151644 is an abundant number, since it is smaller than the sum of its proper divisors (202220).

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

151644 is a wasteful number, since it uses less digits than its factorization.

151644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12644 (or 12642 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 151644 is about 389.4149457841. The cubic root of 151644 is about 53.3263358875.

Adding to 151644 its reverse (446151), we get a palindrome (597795).

The spelling of 151644 in words is "one hundred fifty-one thousand, six hundred forty-four".