75228891 has 16 divisors (see below), whose sum is σ = 103316640. Its totient is φ = 48660480.

The previous prime is 75228869. The next prime is 75228949. The reversal of 75228891 is 19882257.

It is not a de Polignac number, because 75228891 - 2¹⁵ = 75196123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75228821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22155 + ... + 25323.

It is an arithmetic number, because the mean of its divisors is an integer number (6457290).

Almost surely, 2^75228891 is an apocalyptic number.

75228891 is a deficient number, since it is larger than the sum of its proper divisors (28087749).

75228891 is a wasteful number, since it uses less digits than its factorization.

75228891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406.

The product of its digits is 80640, while the sum is 42.

The square root of 75228891 is about 8673.4589985772. The cubic root of 75228891 is about 422.1449061749.

The spelling of 75228891 in words is "seventy-five million, two hundred twenty-eight thousand, eight hundred ninety-one".