75444901 has 4 divisors (see below), whose sum is σ = 86222752. Its totient is φ = 64667052.

The previous prime is 75444883. The next prime is 75444911. The reversal of 75444901 is 10944457.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10944457 = 31 ⋅353047.

It is a cyclic number.

It is not a de Polignac number, because 75444901 - 2⁵ = 75444869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75444911) 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, 5388915 + ... + 5388928.

It is an arithmetic number, because the mean of its divisors is an integer number (21555688).

Almost surely, 2^75444901 is an apocalyptic number.

It is an amenable number.

75444901 is a deficient number, since it is larger than the sum of its proper divisors (10777851).

75444901 is a wasteful number, since it uses less digits than its factorization.

75444901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10777850.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 75444901 is about 8685.9024286484. The cubic root of 75444901 is about 422.5485648456.

The spelling of 75444901 in words is "seventy-five million, four hundred forty-four thousand, nine hundred one".