75276021 has 8 divisors (see below), whose sum is σ = 100492704. Its totient is φ = 50121680.

The previous prime is 75276011. The next prime is 75276023. The reversal of 75276021 is 12067257.

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 75276021 - 2⁵ = 75275989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75276021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75276023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12690 + ... + 17651.

It is an arithmetic number, because the mean of its divisors is an integer number (12561588).

Almost surely, 2^75276021 is an apocalyptic number.

It is an amenable number.

75276021 is a deficient number, since it is larger than the sum of its proper divisors (25216683).

75276021 is a wasteful number, since it uses less digits than its factorization.

75276021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31171.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 75276021 is about 8676.1754823194. The cubic root of 75276021 is about 422.2330440157.

The spelling of 75276021 in words is "seventy-five million, two hundred seventy-six thousand, twenty-one".