75227261 has 4 divisors (see below), whose sum is σ = 79652412. Its totient is φ = 70802112.

The previous prime is 75227249. The next prime is 75227263. The reversal of 75227261 is 16272257.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29920900 + 45306361 = 5470^2 + 6731^2 .

It is a cyclic number.

It is not a de Polignac number, because 75227261 - 2²² = 71032957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75227263) 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, 2212550 + ... + 2212583.

It is an arithmetic number, because the mean of its divisors is an integer number (19913103).

Almost surely, 2^75227261 is an apocalyptic number.

It is an amenable number.

75227261 is a deficient number, since it is larger than the sum of its proper divisors (4425151).

75227261 is a wasteful number, since it uses less digits than its factorization.

75227261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425150.

The product of its digits is 11760, while the sum is 32.

The square root of 75227261 is about 8673.3650332498. The cubic root of 75227261 is about 422.1418572524.

The spelling of 75227261 in words is "seventy-five million, two hundred twenty-seven thousand, two hundred sixty-one".