1051649 has 2 divisors, whose sum is σ = 1051650. Its totient is φ = 1051648.

The previous prime is 1051643. The next prime is 1051663. The reversal of 1051649 is 9461501.

1051649 is nontrivially palindromic in base 4.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1050625 + 1024 = 1025^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 1051649 - 2¹⁶ = 986113 is a prime.

It is a super-2 number, since 2×1051649² = 2211931238402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1051643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525824 + 525825.

It is an arithmetic number, because the mean of its divisors is an integer number (525825).

2^1051649 is an apocalyptic number.

It is an amenable number.

1051649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051649 is an equidigital number, since it uses as much as digits as its factorization.

1051649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1051649 is about 1025.4993905410. The cubic root of 1051649 is about 101.6928153947.

The spelling of 1051649 in words is "one million, fifty-one thousand, six hundred forty-nine".