75254421 has 24 divisors (see below), whose sum is σ = 115543584. Its totient is φ = 43201440.

The previous prime is 75254407. The next prime is 75254477. The reversal of 75254421 is 12445257.

It is not a de Polignac number, because 75254421 - 2⁷ = 75254293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75254401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8755 + ... + 15071.

It is an arithmetic number, because the mean of its divisors is an integer number (4814316).

Almost surely, 2^75254421 is an apocalyptic number.

It is an amenable number.

75254421 is a deficient number, since it is larger than the sum of its proper divisors (40289163).

75254421 is a wasteful number, since it uses less digits than its factorization.

75254421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6369 (or 6350 counting only the distinct ones).

The product of its digits is 11200, while the sum is 30.

The square root of 75254421 is about 8674.9306049098. The cubic root of 75254421 is about 422.1926544109.

Adding to 75254421 its reverse (12445257), we get a palindrome (87699678).

The spelling of 75254421 in words is "seventy-five million, two hundred fifty-four thousand, four hundred twenty-one".