2051041565 has 8 divisors (see below), whose sum is σ = 2462173368. Its totient is φ = 1640217600.

The previous prime is 2051041543. The next prime is 2051041567. The reversal of 2051041565 is 5651401502.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 410224516 + 1640817049 = 20254^2 + 40507^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2051041565 - 2⁸ = 2051041309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051041567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62036 + ... + 89165.

It is an arithmetic number, because the mean of its divisors is an integer number (307771671).

Almost surely, 2^2051041565 is an apocalyptic number.

It is an amenable number.

2051041565 is a deficient number, since it is larger than the sum of its proper divisors (411131803).

2051041565 is a wasteful number, since it uses less digits than its factorization.

2051041565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153919.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 2051041565 is about 45288.4263912978. The cubic root of 2051041565 is about 1270.5492003345.

The spelling of 2051041565 in words is "two billion, fifty-one million, forty-one thousand, five hundred sixty-five".