30172552 has 32 divisors (see below), whose sum is σ = 60900120. Its totient is φ = 13962240.

The previous prime is 30172547. The next prime is 30172553. The reversal of 30172552 is 25527103.

It can be written as a sum of positive squares in 4 ways, for example, as 12916836 + 17255716 = 3594^2 + 4154^2 .

It is not an unprimeable number, because it can be changed into a prime (30172553) 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 7 ways as a sum of consecutive naturals, for example, 6478 + ... + 10114.

Almost surely, 2^30172552 is an apocalyptic number.

It is an amenable number.

30172552 is an abundant number, since it is smaller than the sum of its proper divisors (30727568).

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

30172552 is a wasteful number, since it uses less digits than its factorization.

30172552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721 (or 3717 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 30172552 is about 5492.9547604181. The cubic root of 30172552 is about 311.3178444924.

Adding to 30172552 its reverse (25527103), we get a palindrome (55699655).

The spelling of 30172552 in words is "thirty million, one hundred seventy-two thousand, five hundred fifty-two".