75445000 has 80 divisors (see below), whose sum is σ = 179942400. Its totient is φ = 29640000.

The previous prime is 75444947. The next prime is 75445057. The reversal of 75445000 is 54457.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 394905 + ... + 395095.

It is an arithmetic number, because the mean of its divisors is an integer number (2249280).

Almost surely, 2^75445000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75445000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89971200).

75445000 is an abundant number, since it is smaller than the sum of its proper divisors (104497400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75445000 is a wasteful number, since it uses less digits than its factorization.

75445000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 75445000 is about 8685.9081275362. The cubic root of 75445000 is about 422.5487496705.

Adding to 75445000 its reverse (54457), we get a palindrome (75499457).

It can be divided in two parts, 7544 and 5000, that added together give a square (12544 = 112²).

The spelling of 75445000 in words is "seventy-five million, four hundred forty-five thousand".