5615281 has 4 divisors (see below), whose sum is σ = 6417472. Its totient is φ = 4813092.

The previous prime is 5615273. The next prime is 5615303. The reversal of 5615281 is 1825165.

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 5615281 - 2³ = 5615273 is a prime.

It is a super-2 number, since 2×5615281² = 63062761417922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5615201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401085 + ... + 401098.

It is an arithmetic number, because the mean of its divisors is an integer number (1604368).

Almost surely, 2^5615281 is an apocalyptic number.

It is an amenable number.

5615281 is a deficient number, since it is larger than the sum of its proper divisors (802191).

5615281 is an equidigital number, since it uses as much as digits as its factorization.

5615281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802190.

The product of its digits is 2400, while the sum is 28.

The square root of 5615281 is about 2369.6584142024. The cubic root of 5615281 is about 177.7421781871.

The spelling of 5615281 in words is "five million, six hundred fifteen thousand, two hundred eighty-one".