1046553021 has 8 divisors (see below), whose sum is σ = 1550448960. Its totient is φ = 697701996.

The previous prime is 1046553017. The next prime is 1046553077. The reversal of 1046553021 is 1203556401.

1046553021 is a `hidden beast` number, since 1 + 0 + 4 + 655 + 3 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 1046553021 - 2² = 1046553017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 38761223 = 1046553021 / (1 + 0 + 4 + 6 + 5 + 5 + 3 + 0 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1046553091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19380585 + ... + 19380638.

It is an arithmetic number, because the mean of its divisors is an integer number (193806120).

Almost surely, 2^1046553021 is an apocalyptic number.

It is an amenable number.

1046553021 is a deficient number, since it is larger than the sum of its proper divisors (503895939).

1046553021 is an equidigital number, since it uses as much as digits as its factorization.

1046553021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38761232 (or 38761226 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1046553021 is about 32350.4717276271. The cubic root of 1046553021 is about 1015.2829162725.

The spelling of 1046553021 in words is "one billion, forty-six million, five hundred fifty-three thousand, twenty-one".