30161552 has 20 divisors (see below), whose sum is σ = 58558380. Its totient is φ = 15049728.

The previous prime is 30161539. The next prime is 30161557. The reversal of 30161552 is 25516103.

It can be written as a sum of positive squares in 2 ways, for example, as 17172736 + 12988816 = 4144^2 + 3604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30161557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7448 + ... + 10760.

It is an arithmetic number, because the mean of its divisors is an integer number (2927919).

Almost surely, 2^30161552 is an apocalyptic number.

It is an amenable number.

30161552 is a deficient number, since it is larger than the sum of its proper divisors (28396828).

30161552 is a wasteful number, since it uses less digits than its factorization.

30161552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890 (or 3884 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 30161552 is about 5491.9533865465. The cubic root of 30161552 is about 311.2800075368.

Adding to 30161552 its reverse (25516103), we get a palindrome (55677655).

The spelling of 30161552 in words is "thirty million, one hundred sixty-one thousand, five hundred fifty-two".