71156045 has 8 divisors (see below), whose sum is σ = 89881440. Its totient is φ = 53928720.

The previous prime is 71156021. The next prime is 71156087. The reversal of 71156045 is 54065117.

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

It is not a de Polignac number, because 71156045 - 2¹⁴ = 71139661 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71155999 and 71156017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374411 + ... + 374600.

It is an arithmetic number, because the mean of its divisors is an integer number (11235180).

Almost surely, 2^71156045 is an apocalyptic number.

It is an amenable number.

71156045 is a deficient number, since it is larger than the sum of its proper divisors (18725395).

71156045 is a wasteful number, since it uses less digits than its factorization.

71156045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749035.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 71156045 is about 8435.4042582439. The cubic root of 71156045 is about 414.3849116122.

The spelling of 71156045 in words is "seventy-one million, one hundred fifty-six thousand, forty-five".