71444357 has 4 divisors (see below), whose sum is σ = 71566656. Its totient is φ = 71322060.

The previous prime is 71444341. The next prime is 71444381. The reversal of 71444357 is 75344417.

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 a cyclic number.

It is not a de Polignac number, because 71444357 - 2⁴ = 71444341 is a prime.

It is a super-2 number, since 2×71444357² = 10208592294286898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71444327) 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, 60269 + ... + 61442.

It is an arithmetic number, because the mean of its divisors is an integer number (17891664).

Almost surely, 2^71444357 is an apocalyptic number.

It is an amenable number.

71444357 is a deficient number, since it is larger than the sum of its proper divisors (122299).

71444357 is a wasteful number, since it uses less digits than its factorization.

71444357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122298.

The product of its digits is 47040, while the sum is 35.

The square root of 71444357 is about 8452.4763826940. The cubic root of 71444357 is about 414.9438294325.

The spelling of 71444357 in words is "seventy-one million, four hundred forty-four thousand, three hundred fifty-seven".