2045245545 has 80 divisors (see below), whose sum is σ = 4275849600. Its totient is φ = 934905888.

The previous prime is 2045245513. The next prime is 2045245547. The reversal of 2045245545 is 5455425402.

2045245545 is a `hidden beast` number, since 20 + 4 + 52 + 45 + 545 = 666.

It is not a de Polignac number, because 2045245545 - 2⁵ = 2045245513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2045245547) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 131554 + ... + 146276.

It is an arithmetic number, because the mean of its divisors is an integer number (53448120).

Almost surely, 2^2045245545 is an apocalyptic number.

It is an amenable number.

2045245545 is an abundant number, since it is smaller than the sum of its proper divisors (2230604055).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2045245545 is an equidigital number, since it uses as much as digits as its factorization.

2045245545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14761 (or 14738 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 36.

The square root of 2045245545 is about 45224.3910406763. The cubic root of 2045245545 is about 1269.3512600043.

The spelling of 2045245545 in words is "two billion, forty-five million, two hundred forty-five thousand, five hundred forty-five".