75183421 has 4 divisors (see below), whose sum is σ = 75203100. Its totient is φ = 75163744.

The previous prime is 75183419. The next prime is 75183461. The reversal of 75183421 is 12438157.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34351321 + 40832100 = 5861^2 + 6390^2 .

It is a cyclic number.

It is not a de Polignac number, because 75183421 - 2¹ = 75183419 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 (75183461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2056 + ... + 12433.

It is an arithmetic number, because the mean of its divisors is an integer number (18800775).

Almost surely, 2^75183421 is an apocalyptic number.

It is an amenable number.

75183421 is a deficient number, since it is larger than the sum of its proper divisors (19679).

75183421 is a wasteful number, since it uses less digits than its factorization.

75183421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19678.

The product of its digits is 6720, while the sum is 31.

The square root of 75183421 is about 8670.8373874730. The cubic root of 75183421 is about 422.0598378046.

The spelling of 75183421 in words is "seventy-five million, one hundred eighty-three thousand, four hundred twenty-one".