5521405 has 8 divisors (see below), whose sum is σ = 6663384. Its totient is φ = 4392000.

The previous prime is 5521393. The next prime is 5521427. The reversal of 5521405 is 5041255.

It can be written as a sum of positive squares in 4 ways, for example, as 12996 + 5508409 = 114^2 + 2347^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-5521405 is a prime.

It is a Duffinian number.

5521405 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2146 + ... + 3955.

It is an arithmetic number, because the mean of its divisors is an integer number (832923).

Almost surely, 2^5521405 is an apocalyptic number.

It is an amenable number.

5521405 is a deficient number, since it is larger than the sum of its proper divisors (1141979).

5521405 is a wasteful number, since it uses less digits than its factorization.

5521405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6287.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 5521405 is about 2349.7670097267. The cubic root of 5521405 is about 176.7461115735.

The spelling of 5521405 in words is "five million, five hundred twenty-one thousand, four hundred five".