200533921 has 25 divisors (see below), whose sum is σ = 248563541. Its totient is φ = 161775264.

The previous prime is 200533919. The next prime is 200533939. The reversal of 200533921 is 129335002.

It is a happy number.

The square root of 200533921 is 14161.

It is a perfect power (a square, a biquadrate), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 62236321 + 138297600 = 7889^2 + 11760^2 .

It is not a de Polignac number, because 200533921 - 2¹ = 200533919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200533951) by changing a digit.

It is a polite number, since it can be written in 24 ways as a sum of consecutive naturals, for example, 11796105 + ... + 11796121.

Almost surely, 2^200533921 is an apocalyptic number.

200533921 is the 14161-st square number.

200533921 is the 7081-st centered octagonal number.

It is an amenable number.

200533921 is a deficient number, since it is larger than the sum of its proper divisors (48029620).

200533921 is an frugal number, since it uses more digits than its factorization.

200533921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 24 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The cubic root of 200533921 is about 585.3234834006.

Multiplying 200533921 by its sum of digits (25), we get a square (5013348025 = 70805²).

Adding to 200533921 its reverse (129335002), we get a palindrome (329868923).

The spelling of 200533921 in words is "two hundred million, five hundred thirty-three thousand, nine hundred twenty-one".