10520257 has 4 divisors (see below), whose sum is σ = 11476656. Its totient is φ = 9563860.

The previous prime is 10520227. The next prime is 10520291. The reversal of 10520257 is 75202501.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75202501 = 11 ⋅6836591.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10520257 is a prime.

It is a super-2 number, since 2×10520257² = 221351614692098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10520207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478183 + ... + 478204.

It is an arithmetic number, because the mean of its divisors is an integer number (2869164).

Almost surely, 2^10520257 is an apocalyptic number.

It is an amenable number.

10520257 is a deficient number, since it is larger than the sum of its proper divisors (956399).

10520257 is an equidigital number, since it uses as much as digits as its factorization.

10520257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956398.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 10520257 is about 3243.4945660506. The cubic root of 10520257 is about 219.1166854530.

Adding to 10520257 its reverse (75202501), we get a palindrome (85722758).

The spelling of 10520257 in words is "ten million, five hundred twenty thousand, two hundred fifty-seven".