161245532 has 24 divisors (see below), whose sum is σ = 329355264. Its totient is φ = 67634352.

The previous prime is 161245531. The next prime is 161245547. The reversal of 161245532 is 235542161.

161245532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 161245495 and 161245504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161245531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59948 + ... + 62579.

It is an arithmetic number, because the mean of its divisors is an integer number (13723136).

Almost surely, 2^161245532 is an apocalyptic number.

It is an amenable number.

161245532 is an abundant number, since it is smaller than the sum of its proper divisors (168109732).

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

161245532 is a wasteful number, since it uses less digits than its factorization.

161245532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122585 (or 122583 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 161245532 is about 12698.2491706534. The cubic root of 161245532 is about 544.2885894886.

Adding to 161245532 its reverse (235542161), we get a palindrome (396787693).

The spelling of 161245532 in words is "one hundred sixty-one million, two hundred forty-five thousand, five hundred thirty-two".