651043 has 2 divisors, whose sum is σ = 651044. Its totient is φ = 651042.

The previous prime is 651029. The next prime is 651067. The reversal of 651043 is 340156.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 651043 - 2¹⁷ = 519971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 651043.

It is not a weakly prime, because it can be changed into another prime (651143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325521 + 325522.

It is an arithmetic number, because the mean of its divisors is an integer number (325522).

2⁶⁵¹⁰⁴³ is an apocalyptic number.

651043 is a deficient number, since it is larger than the sum of its proper divisors (1).

651043 is an equidigital number, since it uses as much as digits as its factorization.

651043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 651043 is about 806.8723566959. The cubic root of 651043 is about 86.6702184606.

Adding to 651043 its reverse (340156), we get a palindrome (991199).

The spelling of 651043 in words is "six hundred fifty-one thousand, forty-three".