102057 has 4 divisors (see below), whose sum is σ = 136080. Its totient is φ = 68036.

The previous prime is 102043. The next prime is 102059. The reversal of 102057 is 750201.

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 102057 - 2⁷ = 101929 is a prime.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 102057.

It is not an unprimeable number, because it can be changed into a prime (102059) 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, 17007 + ... + 17012.

It is an arithmetic number, because the mean of its divisors is an integer number (34020).

2¹⁰²⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

102057 is a deficient number, since it is larger than the sum of its proper divisors (34023).

102057 is an equidigital number, since it uses as much as digits as its factorization.

102057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34022.

The product of its (nonzero) digits is 70, while the sum is 15.

The square root of 102057 is about 319.4636129515. The cubic root of 102057 is about 46.7319890203.

Adding to 102057 its reverse (750201), we get a palindrome (852258).

The spelling of 102057 in words is "one hundred two thousand, fifty-seven".