75445001 has 4 divisors (see below), whose sum is σ = 75490512. Its totient is φ = 75399492.

The previous prime is 75444947. The next prime is 75445057. The reversal of 75445001 is 10054457.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75445001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75445061) 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, 20171 + ... + 23616.

It is an arithmetic number, because the mean of its divisors is an integer number (18872628).

Almost surely, 2^75445001 is an apocalyptic number.

It is an amenable number.

75445001 is a deficient number, since it is larger than the sum of its proper divisors (45511).

75445001 is a wasteful number, since it uses less digits than its factorization.

75445001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45510.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 75445001 is about 8685.9081851007. The cubic root of 75445001 is about 422.5487515375.

Adding to 75445001 its reverse (10054457), we get a palindrome (85499458).

The spelling of 75445001 in words is "seventy-five million, four hundred forty-five thousand, one".