200021054 has 4 divisors (see below), whose sum is σ = 300031584. Its totient is φ = 100010526.

The previous prime is 200021023. The next prime is 200021057. The reversal of 200021054 is 450120002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 450120002 = 2 ⋅225060001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200021057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50005262 + ... + 50005265.

It is an arithmetic number, because the mean of its divisors is an integer number (75007896).

Almost surely, 2^200021054 is an apocalyptic number.

200021054 is a deficient number, since it is larger than the sum of its proper divisors (100010530).

200021054 is a wasteful number, since it uses less digits than its factorization.

200021054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100010529.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 200021054 is about 14142.8799754505. The cubic root of 200021054 is about 584.8240676790.

Adding to 200021054 its reverse (450120002), we get a palindrome (650141056).

The spelling of 200021054 in words is "two hundred million, twenty-one thousand, fifty-four".