10818257 has 4 divisors (see below), whose sum is σ = 11288640. Its totient is φ = 10347876.

The previous prime is 10818253. The next prime is 10818271. The reversal of 10818257 is 75281801.

It is a happy number.

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 10818257 - 2² = 10818253 is a prime.

It is a super-3 number, since 3×10818257³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10818253) 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, 235157 + ... + 235202.

It is an arithmetic number, because the mean of its divisors is an integer number (2822160).

Almost surely, 2^10818257 is an apocalyptic number.

It is an amenable number.

10818257 is a deficient number, since it is larger than the sum of its proper divisors (470383).

10818257 is an equidigital number, since it uses as much as digits as its factorization.

10818257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470382.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 10818257 is about 3289.1118862088. Note that the first 3 decimals coincide. The cubic root of 10818257 is about 221.1663741755.

The spelling of 10818257 in words is "ten million, eight hundred eighteen thousand, two hundred fifty-seven".