5155321 has 4 divisors (see below), whose sum is σ = 5294692. Its totient is φ = 5015952.

The previous prime is 5155309. The next prime is 5155351. The reversal of 5155321 is 1235515.

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 2560000 + 2595321 = 1600^2 + 1611^2 .

It is a cyclic number.

It is not a de Polignac number, because 5155321 - 2⁷ = 5155193 is a prime.

It is a super-2 number, since 2×5155321² = 53154669226082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5155292 and 5155301.

It is not an unprimeable number, because it can be changed into a prime (5155351) 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, 69630 + ... + 69703.

It is an arithmetic number, because the mean of its divisors is an integer number (1323673).

Almost surely, 2^5155321 is an apocalyptic number.

It is an amenable number.

5155321 is a deficient number, since it is larger than the sum of its proper divisors (139371).

5155321 is a wasteful number, since it uses less digits than its factorization.

5155321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139370.

The product of its digits is 750, while the sum is 22.

The square root of 5155321 is about 2270.5331972909. The cubic root of 5155321 is about 172.7502047199.

It can be divided in two parts, 5155 and 321, that added together give a square (5476 = 74²).

The spelling of 5155321 in words is "five million, one hundred fifty-five thousand, three hundred twenty-one".