102057811 has 2 divisors, whose sum is σ = 102057812. Its totient is φ = 102057810.

The previous prime is 102057799. The next prime is 102057827. The reversal of 102057811 is 118750201.

It is a weak prime.

It is an emirp because it is prime and its reverse (118750201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102057811 - 2¹¹ = 102055763 is a prime.

It is a super-2 number, since 2×102057811² = 20831593572223442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102057841) 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, 51028905 + 51028906.

It is an arithmetic number, because the mean of its divisors is an integer number (51028906).

Almost surely, 2^102057811 is an apocalyptic number.

102057811 is a deficient number, since it is larger than the sum of its proper divisors (1).

102057811 is an equidigital number, since it uses as much as digits as its factorization.

102057811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 102057811 is about 10102.3666039201. The cubic root of 102057811 is about 467.3211280582.

The spelling of 102057811 in words is "one hundred two million, fifty-seven thousand, eight hundred eleven".