104778001 has 4 divisors (see below), whose sum is σ = 107333604. Its totient is φ = 102222400.

The previous prime is 104777999. The next prime is 104778019. The reversal of 104778001 is 100877401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33814225 + 70963776 = 5815^2 + 8424^2 .

It is a cyclic number.

It is not a de Polignac number, because 104778001 - 2¹ = 104777999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104778031) 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 in 3 ways as a sum of consecutive naturals, for example, 1277740 + ... + 1277821.

It is an arithmetic number, because the mean of its divisors is an integer number (26833401).

Almost surely, 2^104778001 is an apocalyptic number.

It is an amenable number.

104778001 is a deficient number, since it is larger than the sum of its proper divisors (2555603).

104778001 is an equidigital number, since it uses as much as digits as its factorization.

104778001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555602.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 104778001 is about 10236.1125921905. The cubic root of 104778001 is about 471.4366798334.

The spelling of 104778001 in words is "one hundred four million, seven hundred seventy-eight thousand, one".