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501121 is a prime number
BaseRepresentation
bin1111010010110000001
3221110102001
41322112001
5112013441
614424001
74154665
oct1722601
9843361
10501121
11312555
12202001
1314712a
14d08a5
159d731
hex7a581

501121 has 2 divisors, whose sum is σ = 501122. Its totient is φ = 501120.

The previous prime is 501103. The next prime is 501131. The reversal of 501121 is 121105.

It is a happy number.

It is an a-pointer prime, because the next prime (501131) can be obtained adding 501121 to its sum of digits (10).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497025 + 4096 = 705^2 + 64^2 .

It is a cyclic number.

It is not a de Polignac number, because 501121 - 25 = 501089 is a prime.

It is a super-2 number, since 2×5011212 = 502244513282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 501098 and 501107.

It is not a weakly prime, because it can be changed into another prime (501131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250560 + 250561.

It is an arithmetic number, because the mean of its divisors is an integer number (250561).

2501121 is an apocalyptic number.

It is an amenable number.

501121 is a deficient number, since it is larger than the sum of its proper divisors (1).

501121 is an equidigital number, since it uses as much as digits as its factorization.

501121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 501121 is about 707.8990040959. The cubic root of 501121 is about 79.4293242108.

Adding to 501121 its reverse (121105), we get a palindrome (622226).

The spelling of 501121 in words is "five hundred one thousand, one hundred twenty-one".