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5731621 = 73161433
BaseRepresentation
bin10101110111010100100101
3101210012022021
4111313110211
52431402441
6322503141
766501160
oct25672445
911705267
105731621
113265285
121b04ab1
131258abc
14a92ad7
157833d1
hex577525

5731621 has 16 divisors (see below), whose sum is σ = 6888448. Its totient is φ = 4665600.

The previous prime is 5731619. The next prime is 5731639. The reversal of 5731621 is 1261375.

5731621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a 6-Lehmer number, since φ(5731621) divides (5731621-1)6.

It is a cyclic number.

It is not a de Polignac number, because 5731621 - 21 = 5731619 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5731651) 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 15 ways as a sum of consecutive naturals, for example, 13021 + ... + 13453.

It is an arithmetic number, because the mean of its divisors is an integer number (430528).

Almost surely, 25731621 is an apocalyptic number.

It is an amenable number.

5731621 is a deficient number, since it is larger than the sum of its proper divisors (1156827).

5731621 is a wasteful number, since it uses less digits than its factorization.

5731621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532.

The product of its digits is 1260, while the sum is 25.

The square root of 5731621 is about 2394.0804080064. The cubic root of 5731621 is about 178.9613120304.

Adding to 5731621 its reverse (1261375), we get a palindrome (6992996).

The spelling of 5731621 in words is "five million, seven hundred thirty-one thousand, six hundred twenty-one".

Divisors: 1 7 31 61 217 427 433 1891 3031 13237 13423 26413 93961 184891 818803 5731621