2045752261 has 4 divisors (see below), whose sum is σ = 2338002592. Its totient is φ = 1753501932.

The previous prime is 2045752231. The next prime is 2045752283. The reversal of 2045752261 is 1622575402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2045752261 - 2⁵ = 2045752229 is a prime.

It is a super-2 number, since 2×2045752261² = 8370204626773224242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045752231) 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, 146125155 + ... + 146125168.

It is an arithmetic number, because the mean of its divisors is an integer number (584500648).

Almost surely, 2^2045752261 is an apocalyptic number.

It is an amenable number.

2045752261 is a deficient number, since it is larger than the sum of its proper divisors (292250331).

2045752261 is an equidigital number, since it uses as much as digits as its factorization.

2045752261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292250330.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 2045752261 is about 45229.9929361038. The cubic root of 2045752261 is about 1269.4560799339.

The spelling of 2045752261 in words is "two billion, forty-five million, seven hundred fifty-two thousand, two hundred sixty-one".