715381 has 4 divisors (see below), whose sum is σ = 717100. Its totient is φ = 713664.

The previous prime is 715373. The next prime is 715397. The reversal of 715381 is 183517.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 152881 + 562500 = 391^2 + 750^2 .

It is a cyclic number.

It is not a de Polignac number, because 715381 - 2³ = 715373 is a prime.

It is a super-2 number, since 2×715381² = 1023539950322, 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 (715301) 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, 205 + ... + 1213.

It is an arithmetic number, because the mean of its divisors is an integer number (179275).

2⁷¹⁵³⁸¹ is an apocalyptic number.

It is an amenable number.

715381 is a deficient number, since it is larger than the sum of its proper divisors (1719).

715381 is a wasteful number, since it uses less digits than its factorization.

715381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718.

The product of its digits is 840, while the sum is 25.

The square root of 715381 is about 845.8019862828. The cubic root of 715381 is about 89.4360205650.

Adding to 715381 its reverse (183517), we get a palindrome (898898).

The spelling of 715381 in words is "seven hundred fifteen thousand, three hundred eighty-one".