1651560041 has 4 divisors (see below), whose sum is σ = 1652217684. Its totient is φ = 1650902400.

The previous prime is 1651560019. The next prime is 1651560049. The reversal of 1651560041 is 1400651561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1400651561 = 61 ⋅22961501.

It can be written as a sum of positive squares in 2 ways, for example, as 83083225 + 1568476816 = 9115^2 + 39604^2 .

It is a cyclic number.

It is not a de Polignac number, because 1651560041 - 2¹⁴ = 1651543657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1651559986 and 1651560013.

It is not an unprimeable number, because it can be changed into a prime (1651560049) 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, 325040 + ... + 330081.

It is an arithmetic number, because the mean of its divisors is an integer number (413054421).

Almost surely, 2^1651560041 is an apocalyptic number.

It is an amenable number.

1651560041 is a deficient number, since it is larger than the sum of its proper divisors (657643).

1651560041 is an equidigital number, since it uses as much as digits as its factorization.

1651560041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657642.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1651560041 is about 40639.3902636346. The cubic root of 1651560041 is about 1182.0380466985.

The spelling of 1651560041 in words is "one billion, six hundred fifty-one million, five hundred sixty thousand, forty-one".