71050551 has 32 divisors (see below), whose sum is σ = 115153920. Its totient is φ = 38371200.

The previous prime is 71050547. The next prime is 71050561. The reversal of 71050551 is 15505017.

It is not a de Polignac number, because 71050551 - 2² = 71050547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71050541) 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 31 ways as a sum of consecutive naturals, for example, 9586 + ... + 15296.

It is an arithmetic number, because the mean of its divisors is an integer number (3598560).

Almost surely, 2^71050551 is an apocalyptic number.

71050551 is a deficient number, since it is larger than the sum of its proper divisors (44103369).

71050551 is a wasteful number, since it uses less digits than its factorization.

71050551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5767.

The product of its (nonzero) digits is 875, while the sum is 24.

The square root of 71050551 is about 8429.1488894194. The cubic root of 71050551 is about 414.1800250923.

Adding to 71050551 its reverse (15505017), we get a palindrome (86555568).

The spelling of 71050551 in words is "seventy-one million, fifty thousand, five hundred fifty-one".