545186401 has 2 divisors, whose sum is σ = 545186402. Its totient is φ = 545186400.

The previous prime is 545186387. The next prime is 545186423. The reversal of 545186401 is 104681545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539354176 + 5832225 = 23224^2 + 2415^2 .

It is a cyclic number.

It is not a de Polignac number, because 545186401 - 2²⁵ = 511631969 is a prime.

It is not a weakly prime, because it can be changed into another prime (545186441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272593200 + 272593201.

It is an arithmetic number, because the mean of its divisors is an integer number (272593201).

Almost surely, 2^545186401 is an apocalyptic number.

It is an amenable number.

545186401 is a deficient number, since it is larger than the sum of its proper divisors (1).

545186401 is an equidigital number, since it uses as much as digits as its factorization.

545186401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 545186401 is about 23349.2269893459. The cubic root of 545186401 is about 816.9240306356.

The spelling of 545186401 in words is "five hundred forty-five million, one hundred eighty-six thousand, four hundred one".