5149645 has 4 divisors (see below), whose sum is σ = 6179580. Its totient is φ = 4119712.

The previous prime is 5149643. The next prime is 5149667. The reversal of 5149645 is 5469415.

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 3337929 + 1811716 = 1827^2 + 1346^2 .

It is a cyclic number.

It is not a de Polignac number, because 5149645 - 2¹ = 5149643 is a prime.

It is a super-3 number, since 3×5149645³ (a number of 21 digits) contains 333 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 5149645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5149643) 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, 514960 + ... + 514969.

It is an arithmetic number, because the mean of its divisors is an integer number (1544895).

Almost surely, 2^5149645 is an apocalyptic number.

It is an amenable number.

5149645 is a deficient number, since it is larger than the sum of its proper divisors (1029935).

5149645 is a wasteful number, since it uses less digits than its factorization.

5149645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029934.

The product of its digits is 21600, while the sum is 34.

The square root of 5149645 is about 2269.2829263889. The cubic root of 5149645 is about 172.6867822071.

It can be divided in two parts, 5 and 149645, that multiplied together give a square (748225 = 865²).

The spelling of 5149645 in words is "five million, one hundred forty-nine thousand, six hundred forty-five".