71530105 has 8 divisors (see below), whose sum is σ = 86363712. Its totient is φ = 56872368.

The previous prime is 71530103. The next prime is 71530111. The reversal of 71530105 is 50103517.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71530105 - 2¹ = 71530103 is a prime.

It is a super-2 number, since 2×71530105² = 10233111842622050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71530103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43069 + ... + 44698.

It is an arithmetic number, because the mean of its divisors is an integer number (10795464).

Almost surely, 2^71530105 is an apocalyptic number.

It is an amenable number.

71530105 is a deficient number, since it is larger than the sum of its proper divisors (14833607).

71530105 is a wasteful number, since it uses less digits than its factorization.

71530105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87935.

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 71530105 is about 8457.5472212693. The cubic root of 71530105 is about 415.1097691921.

The spelling of 71530105 in words is "seventy-one million, five hundred thirty thousand, one hundred five".