545783401 has 4 divisors (see below), whose sum is σ = 551410132. Its totient is φ = 540156672.

The previous prime is 545783377. The next prime is 545783423. The reversal of 545783401 is 104387545.

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 284799376 + 260984025 = 16876^2 + 16155^2 .

It is a cyclic number.

It is not a de Polignac number, because 545783401 - 2¹⁵ = 545750633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545783101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2813220 + ... + 2813413.

It is an arithmetic number, because the mean of its divisors is an integer number (137852533).

Almost surely, 2^545783401 is an apocalyptic number.

It is an amenable number.

545783401 is a deficient number, since it is larger than the sum of its proper divisors (5626731).

545783401 is an equidigital number, since it uses as much as digits as its factorization.

545783401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5626730.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 545783401 is about 23362.0076406117. The cubic root of 545783401 is about 817.2221095652. Note that the first 3 decimals are identical.

The spelling of 545783401 in words is "five hundred forty-five million, seven hundred eighty-three thousand, four hundred one".