5121845 has 8 divisors (see below), whose sum is σ = 6507864. Its totient is φ = 3856384.

The previous prime is 5121841. The next prime is 5121871. The reversal of 5121845 is 5481215.

It can be written as a sum of positive squares in 4 ways, for example, as 1787569 + 3334276 = 1337^2 + 1826^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5121845 - 2² = 5121841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30044 + ... + 30213.

It is an arithmetic number, because the mean of its divisors is an integer number (813483).

Almost surely, 2^5121845 is an apocalyptic number.

It is an amenable number.

5121845 is a deficient number, since it is larger than the sum of its proper divisors (1386019).

5121845 is a wasteful number, since it uses less digits than its factorization.

5121845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60279.

The product of its digits is 1600, while the sum is 26.

The square root of 5121845 is about 2263.1493543291. The cubic root of 5121845 is about 172.3754754871.

The spelling of 5121845 in words is "five million, one hundred twenty-one thousand, eight hundred forty-five".