5481139 has 4 divisors (see below), whose sum is σ = 5769640. Its totient is φ = 5192640.

The previous prime is 5481137. The next prime is 5481173. The reversal of 5481139 is 9311845.

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

It is a cyclic number.

It is not a de Polignac number, because 5481139 - 2¹ = 5481137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5481139.

It is not an unprimeable number, because it can be changed into a prime (5481137) 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, 144222 + ... + 144259.

It is an arithmetic number, because the mean of its divisors is an integer number (1442410).

Almost surely, 2^5481139 is an apocalyptic number.

5481139 is a deficient number, since it is larger than the sum of its proper divisors (288501).

5481139 is a wasteful number, since it uses less digits than its factorization.

5481139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288500.

The product of its digits is 4320, while the sum is 31.

The square root of 5481139 is about 2341.1832478471. The cubic root of 5481139 is about 176.3154102238.

The spelling of 5481139 in words is "five million, four hundred eighty-one thousand, one hundred thirty-nine".