75221127 has 6 divisors (see below), whose sum is σ = 108652752. Its totient is φ = 50147412.

The previous prime is 75221119. The next prime is 75221143. The reversal of 75221127 is 72112257.

It is not a de Polignac number, because 75221127 - 2³ = 75221119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75221127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75226127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4178943 + ... + 4178960.

It is an arithmetic number, because the mean of its divisors is an integer number (18108792).

Almost surely, 2^75221127 is an apocalyptic number.

75221127 is a deficient number, since it is larger than the sum of its proper divisors (33431625).

75221127 is a wasteful number, since it uses less digits than its factorization.

75221127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8357909 (or 8357906 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 75221127 is about 8673.0114147279. The cubic root of 75221127 is about 422.1303831826.

It can be divided in two parts, 7522 and 1127, that added together give a square (8649 = 93²).

The spelling of 75221127 in words is "seventy-five million, two hundred twenty-one thousand, one hundred twenty-seven".