2065562251 has 4 divisors (see below), whose sum is σ = 2109510432. Its totient is φ = 2021614072.

The previous prime is 2065562231. The next prime is 2065562267. The reversal of 2065562251 is 1522655602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2065562251 - 2¹⁹ = 2065037963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2065562201) 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, 21974020 + ... + 21974113.

It is an arithmetic number, because the mean of its divisors is an integer number (527377608).

Almost surely, 2^2065562251 is an apocalyptic number.

2065562251 is a deficient number, since it is larger than the sum of its proper divisors (43948181).

2065562251 is an equidigital number, since it uses as much as digits as its factorization.

2065562251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43948180.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 2065562251 is about 45448.4570805214. The cubic root of 2065562251 is about 1273.5405062447.

The spelling of 2065562251 in words is "two billion, sixty-five million, five hundred sixty-two thousand, two hundred fifty-one".