8155413 has 18 divisors (see below), whose sum is σ = 13704054. Its totient is φ = 4659984.

The previous prime is 8155391. The next prime is 8155421. The reversal of 8155413 is 3145518.

It can be written as a sum of positive squares in only one way, i.e., 6671889 + 1483524 = 2583^2 + 1218^2 .

It is not a de Polignac number, because 8155413 - 2⁶ = 8155349 is a prime.

It is a super-2 number, since 2×8155413² = 133021522401138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8155453) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8806 + ... + 9687.

Almost surely, 2^8155413 is an apocalyptic number.

It is an amenable number.

8155413 is a deficient number, since it is larger than the sum of its proper divisors (5548641).

8155413 is a wasteful number, since it uses less digits than its factorization.

8155413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18513 (or 18503 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 8155413 is about 2855.7683729602. The cubic root of 8155413 is about 201.2868111618.

The spelling of 8155413 in words is "eight million, one hundred fifty-five thousand, four hundred thirteen".