1046550021 has 16 divisors (see below), whose sum is σ = 1539362880. Its totient is φ = 627144320.

The previous prime is 1046550019. The next prime is 1046550047. The reversal of 1046550021 is 1200556401.

It is not a de Polignac number, because 1046550021 - 2¹ = 1046550019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1046549973 and 1046550000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1046550121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175230 + ... + 181103.

It is an arithmetic number, because the mean of its divisors is an integer number (96210180).

Almost surely, 2^1046550021 is an apocalyptic number.

1046550021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1046550021 is a deficient number, since it is larger than the sum of its proper divisors (492812859).

1046550021 is a wasteful number, since it uses less digits than its factorization.

1046550021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356436.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1046550021 is about 32350.4253604184. The cubic root of 1046550021 is about 1015.2819461508.

The spelling of 1046550021 in words is "one billion, forty-six million, five hundred fifty thousand, twenty-one".