75224133 has 20 divisors (see below), whose sum is σ = 118984140. Its totient is φ = 47198592.

The previous prime is 75224131. The next prime is 75224207. The reversal of 75224133 is 33142257.

75224133 is a `hidden beast` number, since 7 + 522 + 4 + 133 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54730404 + 20493729 = 7398^2 + 4527^2 .

It is not a de Polignac number, because 75224133 - 2¹ = 75224131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 75224097 and 75224106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75224131) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25938 + ... + 28691.

It is an arithmetic number, because the mean of its divisors is an integer number (5949207).

Almost surely, 2^75224133 is an apocalyptic number.

It is an amenable number.

75224133 is a deficient number, since it is larger than the sum of its proper divisors (43760007).

75224133 is a wasteful number, since it uses less digits than its factorization.

75224133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54658 (or 54649 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 75224133 is about 8673.1847092057. The cubic root of 75224133 is about 422.1360061907.

It can be divided in two parts, 75224 and 133, that added together give a palindrome (75357).

The spelling of 75224133 in words is "seventy-five million, two hundred twenty-four thousand, one hundred thirty-three".