1051654661 has 2 divisors, whose sum is σ = 1051654662. Its totient is φ = 1051654660.

The previous prime is 1051654649. The next prime is 1051654739. The reversal of 1051654661 is 1664561501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 671794561 + 379860100 = 25919^2 + 19490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1051654661 is a prime.

It is a super-2 number, since 2×1051654661² = 2211955052006049842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1051654631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525827330 + 525827331.

It is an arithmetic number, because the mean of its divisors is an integer number (525827331).

Almost surely, 2^1051654661 is an apocalyptic number.

It is an amenable number.

1051654661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051654661 is an equidigital number, since it uses as much as digits as its factorization.

1051654661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 1051654661 is about 32429.2254147397. The cubic root of 1051654661 is about 1016.9299786428.

The spelling of 1051654661 in words is "one billion, fifty-one million, six hundred fifty-four thousand, six hundred sixty-one".