10209457 has 4 divisors (see below), whose sum is σ = 10324260. Its totient is φ = 10094656.

The previous prime is 10209449. The next prime is 10209461. The reversal of 10209457 is 75490201.

It is a happy number.

10209457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75490201 = 2203 ⋅34267.

It can be written as a sum of positive squares in 2 ways, for example, as 5387041 + 4822416 = 2321^2 + 2196^2 .

It is a cyclic number.

It is not a de Polignac number, because 10209457 - 2³ = 10209449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10209427) 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, 57268 + ... + 57445.

It is an arithmetic number, because the mean of its divisors is an integer number (2581065).

Almost surely, 2^10209457 is an apocalyptic number.

It is an amenable number.

10209457 is a deficient number, since it is larger than the sum of its proper divisors (114803).

10209457 is an equidigital number, since it uses as much as digits as its factorization.

10209457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114802.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 10209457 is about 3195.2240922978. The cubic root of 10209457 is about 216.9372920805.

Adding to 10209457 its reverse (75490201), we get a palindrome (85699658).

The spelling of 10209457 in words is "ten million, two hundred nine thousand, four hundred fifty-seven".