71151393 has 4 divisors (see below), whose sum is σ = 94868528. Its totient is φ = 47434260.

The previous prime is 71151389. The next prime is 71151403. The reversal of 71151393 is 39315117.

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.

It is not a de Polignac number, because 71151393 - 2² = 71151389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71151393.

It is not an unprimeable number, because it can be changed into a prime (71151323) 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, 11858563 + ... + 11858568.

It is an arithmetic number, because the mean of its divisors is an integer number (23717132).

Almost surely, 2^71151393 is an apocalyptic number.

It is an amenable number.

71151393 is a deficient number, since it is larger than the sum of its proper divisors (23717135).

71151393 is a wasteful number, since it uses less digits than its factorization.

71151393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23717134.

The product of its digits is 2835, while the sum is 30.

The square root of 71151393 is about 8435.1285111728. The cubic root of 71151393 is about 414.3758809406.

The spelling of 71151393 in words is "seventy-one million, one hundred fifty-one thousand, three hundred ninety-three".