1051650221 has 16 divisors (see below), whose sum is σ = 1084572288. Its totient is φ = 1019304000.

The previous prime is 1051650217. The next prime is 1051650241. The reversal of 1051650221 is 1220561501.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1051650221 - 2² = 1051650217 is a prime.

It is a super-2 number, since 2×1051650221² = 2211936374658697682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051650241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2648795 + ... + 2649191.

It is an arithmetic number, because the mean of its divisors is an integer number (67785768).

Almost surely, 2^1051650221 is an apocalyptic number.

It is an amenable number.

1051650221 is a deficient number, since it is larger than the sum of its proper divisors (32922067).

1051650221 is a wasteful number, since it uses less digits than its factorization.

1051650221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1051650221 is about 32429.1569578982. The cubic root of 1051650221 is about 1016.9285475090.

The spelling of 1051650221 in words is "one billion, fifty-one million, six hundred fifty thousand, two hundred twenty-one".