71151401 has 4 divisors (see below), whose sum is σ = 71168400. Its totient is φ = 71134404.

The previous prime is 71151389. The next prime is 71151403. The reversal of 71151401 is 10415117.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 71151401 - 2⁶ = 71151337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71151403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2690 + ... + 12228.

It is an arithmetic number, because the mean of its divisors is an integer number (17792100).

Almost surely, 2^71151401 is an apocalyptic number.

It is an amenable number.

71151401 is a deficient number, since it is larger than the sum of its proper divisors (16999).

71151401 is an equidigital number, since it uses as much as digits as its factorization.

71151401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16998.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 71151401 is about 8435.1289853801. The cubic root of 71151401 is about 414.3758964709.

Adding to 71151401 its reverse (10415117), we get a palindrome (81566518).

The spelling of 71151401 in words is "seventy-one million, one hundred fifty-one thousand, four hundred one".