75573021 has 8 divisors (see below), whose sum is σ = 101183104. Its totient is φ = 50172480.

The previous prime is 75572993. The next prime is 75573037. The reversal of 75573021 is 12037557.

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

It is not a de Polignac number, because 75573021 - 2⁵ = 75572989 is a prime.

It is a super-2 number, since 2×75573021² = 11422563006132882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75573021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75573821) 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, 51541 + ... + 52986.

It is an arithmetic number, because the mean of its divisors is an integer number (12647888).

Almost surely, 2^75573021 is an apocalyptic number.

It is an amenable number.

75573021 is a deficient number, since it is larger than the sum of its proper divisors (25610083).

75573021 is a wasteful number, since it uses less digits than its factorization.

75573021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104771.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 75573021 is about 8693.2744693815. The cubic root of 75573021 is about 422.7876192430.

The spelling of 75573021 in words is "seventy-five million, five hundred seventy-three thousand, twenty-one".