71253105 has 64 divisors (see below), whose sum is σ = 145152000. Its totient is φ = 29588160.

The previous prime is 71253089. The next prime is 71253109. The reversal of 71253105 is 50135217.

It is not a de Polignac number, because 71253105 - 2⁴ = 71253089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71253109) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55966 + ... + 57224.

It is an arithmetic number, because the mean of its divisors is an integer number (2268000).

Almost surely, 2^71253105 is an apocalyptic number.

It is an amenable number.

71253105 is an abundant number, since it is smaller than the sum of its proper divisors (73898895).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71253105 is a wasteful number, since it uses less digits than its factorization.

71253105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299 (or 1285 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 71253105 is about 8441.1554303898. The cubic root of 71253105 is about 414.5732391393.

The spelling of 71253105 in words is "seventy-one million, two hundred fifty-three thousand, one hundred five".