102778801 has 8 divisors (see below), whose sum is σ = 105773184. Its totient is φ = 99818160.

The previous prime is 102778799. The next prime is 102778831. The reversal of 102778801 is 108877201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102778801 - 2¹ = 102778799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102778831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2190 + ... + 14503.

It is an arithmetic number, because the mean of its divisors is an integer number (13221648).

Almost surely, 2^102778801 is an apocalyptic number.

It is an amenable number.

102778801 is a deficient number, since it is larger than the sum of its proper divisors (2994383).

102778801 is a wasteful number, since it uses less digits than its factorization.

102778801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16871.

The product of its (nonzero) digits is 6272, while the sum is 34.

The square root of 102778801 is about 10137.9880153806. The cubic root of 102778801 is about 468.4190140840.

The spelling of 102778801 in words is "one hundred two million, seven hundred seventy-eight thousand, eight hundred one".