545405245 has 32 divisors (see below), whose sum is σ = 831409920. Its totient is φ = 333565440.

The previous prime is 545405243. The next prime is 545405251. The reversal of 545405245 is 542504545.

It is not a de Polignac number, because 545405245 - 2¹ = 545405243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 545405245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545405243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7041 + ... + 33769.

It is an arithmetic number, because the mean of its divisors is an integer number (25981560).

Almost surely, 2^545405245 is an apocalyptic number.

545405245 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

545405245 is a deficient number, since it is larger than the sum of its proper divisors (286004675).

545405245 is a wasteful number, since it uses less digits than its factorization.

545405245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26805.

The product of its (nonzero) digits is 80000, while the sum is 34.

The square root of 545405245 is about 23353.9128413206. The cubic root of 545405245 is about 817.0333235345.

The spelling of 545405245 in words is "five hundred forty-five million, four hundred five thousand, two hundred forty-five".