5405121 has 6 divisors (see below), whose sum is σ = 7807410. Its totient is φ = 3603408.

The previous prime is 5405119. The next prime is 5405123. The reversal of 5405121 is 1215045.

5405121 is a `hidden beast` number, since 540 + 5 + 121 = 666.

It is an interprime number because it is at equal distance from previous prime (5405119) and next prime (5405123).

It can be written as a sum of positive squares in only one way, i.e., 3686400 + 1718721 = 1920^2 + 1311^2 .

It is not a de Polignac number, because 5405121 - 2¹ = 5405119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5405094 and 5405103.

It is not an unprimeable number, because it can be changed into a prime (5405123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 300276 + ... + 300293.

It is an arithmetic number, because the mean of its divisors is an integer number (1301235).

Almost surely, 2^5405121 is an apocalyptic number.

It is an amenable number.

5405121 is a deficient number, since it is larger than the sum of its proper divisors (2402289).

5405121 is a wasteful number, since it uses less digits than its factorization.

5405121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600575 (or 600572 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 5405121 is about 2324.8916103767. The cubic root of 5405121 is about 175.4965056406.

The spelling of 5405121 in words is "five million, four hundred five thousand, one hundred twenty-one".