53172200 has 24 divisors (see below), whose sum is σ = 123625830. Its totient is φ = 21268800.

The previous prime is 53172193. The next prime is 53172239. The reversal of 53172200 is 227135.

It can be written as a sum of positive squares in 3 ways, for example, as 27019204 + 26152996 = 5198^2 + 5114^2 .

It is a super-3 number, since 3×53172200³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132731 + ... + 133130.

Almost surely, 2^53172200 is an apocalyptic number.

53172200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53172200 is an abundant number, since it is smaller than the sum of its proper divisors (70453630).

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

53172200 is a wasteful number, since it uses less digits than its factorization.

53172200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265877 (or 265868 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 53172200 is about 7291.9270429702. The cubic root of 53172200 is about 376.0349484642.

Adding to 53172200 its reverse (227135), we get a palindrome (53399335).

The spelling of 53172200 in words is "fifty-three million, one hundred seventy-two thousand, two hundred".