2045232561 has 32 divisors (see below), whose sum is σ = 2968358400. Its totient is φ = 1248289920.

The previous prime is 2045232559. The next prime is 2045232619. The reversal of 2045232561 is 1652325402.

It is not a de Polignac number, because 2045232561 - 2¹ = 2045232559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2045232551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245970 + ... + 254148.

It is an arithmetic number, because the mean of its divisors is an integer number (92761200).

Almost surely, 2^2045232561 is an apocalyptic number.

It is an amenable number.

2045232561 is a deficient number, since it is larger than the sum of its proper divisors (923125839).

2045232561 is a wasteful number, since it uses less digits than its factorization.

2045232561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8349.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 2045232561 is about 45224.2474895935. The cubic root of 2045232561 is about 1269.3485738897.

Adding to 2045232561 its reverse (1652325402), we get a palindrome (3697557963).

The spelling of 2045232561 in words is "two billion, forty-five million, two hundred thirty-two thousand, five hundred sixty-one".