5145639 has 4 divisors (see below), whose sum is σ = 6860856. Its totient is φ = 3430424.

The previous prime is 5145631. The next prime is 5145643. The reversal of 5145639 is 9365415.

It is a happy number.

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 5145639 - 2³ = 5145631 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5145631) 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, 857604 + ... + 857609.

It is an arithmetic number, because the mean of its divisors is an integer number (1715214).

Almost surely, 2^5145639 is an apocalyptic number.

5145639 is a deficient number, since it is larger than the sum of its proper divisors (1715217).

5145639 is a wasteful number, since it uses less digits than its factorization.

5145639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715216.

The product of its digits is 16200, while the sum is 33.

The square root of 5145639 is about 2268.4000969847. The cubic root of 5145639 is about 172.6419918892.

The spelling of 5145639 in words is "five million, one hundred forty-five thousand, six hundred thirty-nine".