102178801 has 2 divisors, whose sum is σ = 102178802. Its totient is φ = 102178800.

The previous prime is 102178787. The next prime is 102178841. The reversal of 102178801 is 108871201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82810000 + 19368801 = 9100^2 + 4401^2 .

It is a cyclic number.

It is not a de Polignac number, because 102178801 - 2¹³ = 102170609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102178801.

It is not a weakly prime, because it can be changed into another prime (102178841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51089400 + 51089401.

It is an arithmetic number, because the mean of its divisors is an integer number (51089401).

Almost surely, 2^102178801 is an apocalyptic number.

It is an amenable number.

102178801 is a deficient number, since it is larger than the sum of its proper divisors (1).

102178801 is an equidigital number, since it uses as much as digits as its factorization.

102178801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 102178801 is about 10108.3530310333. The cubic root of 102178801 is about 467.5057255726.

The spelling of 102178801 in words is "one hundred two million, one hundred seventy-eight thousand, eight hundred one".