71279901 has 48 divisors (see below), whose sum is σ = 130216320. Its totient is φ = 36495360.

The previous prime is 71279899. The next prime is 71279909. The reversal of 71279901 is 10997217.

It is not a de Polignac number, because 71279901 - 2¹ = 71279899 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71279909) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49885 + ... + 51293.

It is an arithmetic number, because the mean of its divisors is an integer number (2712840).

Almost surely, 2^71279901 is an apocalyptic number.

It is an amenable number.

71279901 is a deficient number, since it is larger than the sum of its proper divisors (58936419).

71279901 is a wasteful number, since it uses less digits than its factorization.

71279901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506 (or 1503 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 71279901 is about 8442.7425046604. The cubic root of 71279901 is about 414.6252018444.

It can be divided in two parts, 71 and 279901, that added together give a palindrome (279972).

The spelling of 71279901 in words is "seventy-one million, two hundred seventy-nine thousand, nine hundred one".