8415481 has 4 divisors (see below), whose sum is σ = 8705700. Its totient is φ = 8125264.

The previous prime is 8415469. The next prime is 8415497. The reversal of 8415481 is 1845148.

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 5103081 + 3312400 = 2259^2 + 1820^2 .

It is a cyclic number.

It is not a de Polignac number, because 8415481 - 2¹⁵ = 8382713 is a prime.

It is a super-2 number, since 2×8415481² = 141640640922722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8415431) 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, 145066 + ... + 145123.

It is an arithmetic number, because the mean of its divisors is an integer number (2176425).

Almost surely, 2^8415481 is an apocalyptic number.

It is an amenable number.

8415481 is a deficient number, since it is larger than the sum of its proper divisors (290219).

8415481 is a wasteful number, since it uses less digits than its factorization.

8415481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290218.

The product of its digits is 5120, while the sum is 31.

The square root of 8415481 is about 2900.9448460803. The cubic root of 8415481 is about 203.4040743437.

The spelling of 8415481 in words is "eight million, four hundred fifteen thousand, four hundred eighty-one".