5717421 has 12 divisors (see below), whose sum is σ = 8320572. Its totient is φ = 3782976.

The previous prime is 5717419. The next prime is 5717431. The reversal of 5717421 is 1247175.

5717421 is a `hidden beast` number, since 571 + 74 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2368521 + 3348900 = 1539^2 + 1830^2 .

It is not a de Polignac number, because 5717421 - 2¹ = 5717419 is a prime.

It is an Ulam number.

5717421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5717401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1086 + ... + 3551.

It is an arithmetic number, because the mean of its divisors is an integer number (693381).

Almost surely, 2^5717421 is an apocalyptic number.

It is an amenable number.

5717421 is a deficient number, since it is larger than the sum of its proper divisors (2603151).

5717421 is a wasteful number, since it uses less digits than its factorization.

5717421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4780 (or 4777 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 5717421 is about 2391.1129207965. The cubic root of 5717421 is about 178.8133985425.

The spelling of 5717421 in words is "five million, seven hundred seventeen thousand, four hundred twenty-one".