20021054 has 16 divisors (see below), whose sum is σ = 30675120. Its totient is φ = 9797760.

The previous prime is 20021021. The next prime is 20021059. The reversal of 20021054 is 45012002.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021059) 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, 46022 + ... + 46454.

It is an arithmetic number, because the mean of its divisors is an integer number (1917195).

Almost surely, 2^20021054 is an apocalyptic number.

20021054 is a deficient number, since it is larger than the sum of its proper divisors (10654066).

20021054 is a wasteful number, since it uses less digits than its factorization.

20021054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875.

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

The square root of 20021054 is about 4474.4892445954. The cubic root of 20021054 is about 271.5369771703.

Adding to 20021054 its reverse (45012002), we get a palindrome (65033056).

The spelling of 20021054 in words is "twenty million, twenty-one thousand, fifty-four".