71408551 has 8 divisors (see below), whose sum is σ = 75682944. Its totient is φ = 67142400.

The previous prime is 71408539. The next prime is 71408569. The reversal of 71408551 is 15580417.

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 71408551 - 2¹⁹ = 70884263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71408501) by changing a digit.

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, 32091 + ... + 34243.

It is an arithmetic number, because the mean of its divisors is an integer number (9460368).

Almost surely, 2^71408551 is an apocalyptic number.

71408551 is a deficient number, since it is larger than the sum of its proper divisors (4274393).

71408551 is a wasteful number, since it uses less digits than its factorization.

71408551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 71408551 is about 8450.3580397519. The cubic root of 71408551 is about 414.8744982675.

Adding to 71408551 its reverse (15580417), we get a palindrome (86988968).

The spelling of 71408551 in words is "seventy-one million, four hundred eight thousand, five hundred fifty-one".