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5220257 = 7745751
BaseRepresentation
bin10011111010011110100001
3100211012211212
4103322132201
52314022012
6303515505
762241260
oct23723641
910735755
105220257
112a46069
1218b8b95
13110a113
1499c5d7
156d1b22
hex4fa7a1

5220257 has 4 divisors (see below), whose sum is σ = 5966016. Its totient is φ = 4474500.

The previous prime is 5220251. The next prime is 5220277. The reversal of 5220257 is 7520225.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5220257 - 28 = 5220001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5220251) 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 3 ways as a sum of consecutive naturals, for example, 372869 + ... + 372882.

It is an arithmetic number, because the mean of its divisors is an integer number (1491504).

Almost surely, 25220257 is an apocalyptic number.

It is an amenable number.

5220257 is a deficient number, since it is larger than the sum of its proper divisors (745759).

5220257 is an equidigital number, since it uses as much as digits as its factorization.

5220257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745758.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 5220257 is about 2284.7881739890. The cubic root of 5220257 is about 173.4724963116.

Subtracting 5220257 from its reverse (7520225), we obtain a cube (2299968 = 1323).

The spelling of 5220257 in words is "five million, two hundred twenty thousand, two hundred fifty-seven".

Divisors: 1 7 745751 5220257