71156485 has 16 divisors (see below), whose sum is σ = 87114240. Its totient is φ = 55785600.

The previous prime is 71156473. The next prime is 71156497. The reversal of 71156485 is 58465117.

71156485 = T₆₈₈₆ + T₆₈₈₇ + T₆₈₈₈.

71156485 is a nontrivial binomial coefficient, being equal to C(11930, 2).

It is an interprime number because it is at equal distance from previous prime (71156473) and next prime (71156497).

It is a de Polignac number, because none of the positive numbers 2^k-71156485 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59049 + ... + 60241.

It is an arithmetic number, because the mean of its divisors is an integer number (5444640).

Almost surely, 2^71156485 is an apocalyptic number.

71156485 is the 11929-th triangular number and also the 5965-th hexagonal number.

71156485 is the 6888-th centered triangular number and also the 3977-th centered nonagonal number.

It is an amenable number.

71156485 is a deficient number, since it is larger than the sum of its proper divisors (15957755).

71156485 is a wasteful number, since it uses less digits than its factorization.

71156485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428.

The product of its digits is 33600, while the sum is 37.

The square root of 71156485 is about 8435.4303387557. The cubic root of 71156485 is about 414.3857657396.

The spelling of 71156485 in words is "seventy-one million, one hundred fifty-six thousand, four hundred eighty-five".