10865557 has 2 divisors, whose sum is σ = 10865558. Its totient is φ = 10865556.

The previous prime is 10865471. The next prime is 10865609. The reversal of 10865557 is 75556801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9696996 + 1168561 = 3114^2 + 1081^2 .

It is an emirp because it is prime and its reverse (75556801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10865557 - 2⁷ = 10865429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10865357) 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 as a sum of consecutive naturals, namely, 5432778 + 5432779.

It is an arithmetic number, because the mean of its divisors is an integer number (5432779).

Almost surely, 2^10865557 is an apocalyptic number.

It is an amenable number.

10865557 is a deficient number, since it is larger than the sum of its proper divisors (1).

10865557 is an equidigital number, since it uses as much as digits as its factorization.

10865557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 10865557 is about 3296.2944346645. The cubic root of 10865557 is about 221.4882362580.

The spelling of 10865557 in words is "ten million, eight hundred sixty-five thousand, five hundred fifty-seven".