75409450 has 48 divisors (see below), whose sum is σ = 150526080. Its totient is φ = 28005120.

The previous prime is 75409447. The next prime is 75409459. The reversal of 75409450 is 5490457.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (75409459) 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, 66589 + ... + 67711.

It is an arithmetic number, because the mean of its divisors is an integer number (3135960).

Almost surely, 2^75409450 is an apocalyptic number.

75409450 is a deficient number, since it is larger than the sum of its proper divisors (75116630).

75409450 is a wasteful number, since it uses less digits than its factorization.

75409450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1226 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 75409450 is about 8683.8614682640. The cubic root of 75409450 is about 422.4823703298.

The spelling of 75409450 in words is "seventy-five million, four hundred nine thousand, four hundred fifty".