102251143 has 2 divisors, whose sum is σ = 102251144. Its totient is φ = 102251142.

The previous prime is 102251137. The next prime is 102251159. The reversal of 102251143 is 341152201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102251143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102251143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102281143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51125571 + 51125572.

It is an arithmetic number, because the mean of its divisors is an integer number (51125572).

Almost surely, 2^102251143 is an apocalyptic number.

102251143 is a deficient number, since it is larger than the sum of its proper divisors (1).

102251143 is an equidigital number, since it uses as much as digits as its factorization.

102251143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 102251143 is about 10111.9307256330. The cubic root of 102251143 is about 467.6160299948.

The spelling of 102251143 in words is "one hundred two million, two hundred fifty-one thousand, one hundred forty-three".