161245332 has 36 divisors (see below), whose sum is σ = 408422196. Its totient is φ = 53639040.

The previous prime is 161245327. The next prime is 161245339. The reversal of 161245332 is 233542161.

161245332 is a `hidden beast` number, since 1 + 6 + 124 + 533 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 80353296 + 80892036 = 8964^2 + 8994^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 161245296 and 161245305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161245339) 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, 14458 + ... + 23054.

It is an arithmetic number, because the mean of its divisors is an integer number (11345061).

Almost surely, 2^161245332 is an apocalyptic number.

161245332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161245332 is an abundant number, since it is smaller than the sum of its proper divisors (247176864).

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

161245332 is a wasteful number, since it uses less digits than its factorization.

161245332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9128 (or 9123 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 161245332 is about 12698.2412955496. The cubic root of 161245332 is about 544.2883644533.

Adding to 161245332 its reverse (233542161), we get a palindrome (394787493).

The spelling of 161245332 in words is "one hundred sixty-one million, two hundred forty-five thousand, three hundred thirty-two".