161367552 has 120 divisors (see below), whose sum is σ = 483338856. Its totient is φ = 53747712.

The previous prime is 161367541. The next prime is 161367559. The reversal of 161367552 is 255763161.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161367559) 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, 123768 + ... + 125064.

Almost surely, 2^161367552 is an apocalyptic number.

161367552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161367552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241669428).

161367552 is an abundant number, since it is smaller than the sum of its proper divisors (321971304).

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

161367552 is an frugal number, since it uses more digits than its factorization.

161367552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330 (or 1302 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 161367552 is about 12703.0528614188. The cubic root of 161367552 is about 544.4258487918.

The spelling of 161367552 in words is "one hundred sixty-one million, three hundred sixty-seven thousand, five hundred fifty-two".