71155479 has 8 divisors (see below), whose sum is σ = 94938480. Its totient is φ = 47404736.

The previous prime is 71155457. The next prime is 71155481. The reversal of 71155479 is 97455117.

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 71155479 - 2¹² = 71151383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71155499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2334 + ... + 12155.

It is an arithmetic number, because the mean of its divisors is an integer number (11867310).

Almost surely, 2^71155479 is an apocalyptic number.

71155479 is a deficient number, since it is larger than the sum of its proper divisors (23783001).

71155479 is a wasteful number, since it uses less digits than its factorization.

71155479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16129.

The product of its digits is 44100, while the sum is 39.

The square root of 71155479 is about 8435.3707091034. The cubic root of 71155479 is about 414.3838128886.

The spelling of 71155479 in words is "seventy-one million, one hundred fifty-five thousand, four hundred seventy-nine".