162521532 has 48 divisors (see below), whose sum is σ = 429317280. Its totient is φ = 53149824.

The previous prime is 162521531. The next prime is 162521549. The reversal of 162521532 is 235125261.

It is a happy number.

162521532 is a `hidden beast` number, since 1 + 625 + 2 + 1 + 5 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 162521496 and 162521505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162521531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8473 + ... + 19920.

It is an arithmetic number, because the mean of its divisors is an integer number (8944110).

Almost surely, 2^162521532 is an apocalyptic number.

162521532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

162521532 is an abundant number, since it is smaller than the sum of its proper divisors (266795748).

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

162521532 is a wasteful number, since it uses less digits than its factorization.

162521532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28459 (or 28451 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 162521532 is about 12748.3933105313. The cubic root of 162521532 is about 545.7205428984.

Adding to 162521532 its reverse (235125261), we get a palindrome (397646793).

The spelling of 162521532 in words is "one hundred sixty-two million, five hundred twenty-one thousand, five hundred thirty-two".