5578781401 has 2 divisors, whose sum is σ = 5578781402. Its totient is φ = 5578781400.

The previous prime is 5578781381. The next prime is 5578781407. The reversal of 5578781401 is 1041878755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4050049600 + 1528731801 = 63640^2 + 39099^2 .

It is a cyclic number.

It is not a de Polignac number, because 5578781401 - 2¹⁵ = 5578748633 is a prime.

It is a super-2 number, since 2×5578781401² = 62245603840287045602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5578781407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2789390700 + 2789390701.

It is an arithmetic number, because the mean of its divisors is an integer number (2789390701).

Almost surely, 2^5578781401 is an apocalyptic number.

It is an amenable number.

5578781401 is a deficient number, since it is larger than the sum of its proper divisors (1).

5578781401 is an equidigital number, since it uses as much as digits as its factorization.

5578781401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 313600, while the sum is 46.

The square root of 5578781401 is about 74691.2404569639. The cubic root of 5578781401 is about 1773.5622981968.

The spelling of 5578781401 in words is "five billion, five hundred seventy-eight million, seven hundred eighty-one thousand, four hundred one".