1050256661 has 2 divisors, whose sum is σ = 1050256662. Its totient is φ = 1050256660.

The previous prime is 1050256643. The next prime is 1050256667. The reversal of 1050256661 is 1666520501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 529276036 + 520980625 = 23006^2 + 22825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1050256661 is a prime.

It is a super-2 number, since 2×1050256661² = 2206078107949737842, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1050256667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525128330 + 525128331.

It is an arithmetic number, because the mean of its divisors is an integer number (525128331).

Almost surely, 2^1050256661 is an apocalyptic number.

It is an amenable number.

1050256661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1050256661 is an equidigital number, since it uses as much as digits as its factorization.

1050256661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1050256661 is about 32407.6636152624. The cubic root of 1050256661 is about 1016.4791657205.

The spelling of 1050256661 in words is "one billion, fifty million, two hundred fifty-six thousand, six hundred sixty-one".