71551485 has 32 divisors (see below), whose sum is σ = 128832000. Its totient is φ = 37672128.

The previous prime is 71551481. The next prime is 71551489. The reversal of 71551485 is 58415517.

It is an interprime number because it is at equal distance from previous prime (71551481) and next prime (71551489).

It is not a de Polignac number, because 71551485 - 2² = 71551481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71551481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7311 + ... + 14019.

It is an arithmetic number, because the mean of its divisors is an integer number (4026000).

Almost surely, 2^71551485 is an apocalyptic number.

It is an amenable number.

71551485 is a deficient number, since it is larger than the sum of its proper divisors (57280515).

71551485 is a wasteful number, since it uses less digits than its factorization.

71551485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6802 (or 6796 counting only the distinct ones).

The product of its digits is 28000, while the sum is 36.

The square root of 71551485 is about 8458.8110866717. The cubic root of 71551485 is about 415.1511231683.

The spelling of 71551485 in words is "seventy-one million, five hundred fifty-one thousand, four hundred eighty-five".