75254021 has 8 divisors (see below), whose sum is σ = 76801344. Its totient is φ = 73720800.

The previous prime is 75254017. The next prime is 75254029. The reversal of 75254021 is 12045257.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75254021 - 2² = 75254017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75254029) 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, 7610 + ... + 14436.

It is an arithmetic number, because the mean of its divisors is an integer number (9600168).

Almost surely, 2^75254021 is an apocalyptic number.

It is an amenable number.

75254021 is a deficient number, since it is larger than the sum of its proper divisors (1547323).

75254021 is a wasteful number, since it uses less digits than its factorization.

75254021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7051.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 75254021 is about 8674.9075499397. The cubic root of 75254021 is about 422.1919063824.

Adding to 75254021 its reverse (12045257), we get a palindrome (87299278).

The spelling of 75254021 in words is "seventy-five million, two hundred fifty-four thousand, twenty-one".