20054951 has 16 divisors (see below), whose sum is σ = 24477696. Its totient is φ = 16039296.

The previous prime is 20054941. The next prime is 20054963. The reversal of 20054951 is 15945002.

It is not a de Polignac number, because 20054951 - 2¹⁰ = 20053927 is a prime.

It is a super-2 number, since 2×20054951² = 804402119224802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20054951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20054941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14450 + ... + 15776.

It is an arithmetic number, because the mean of its divisors is an integer number (1529856).

Almost surely, 2^20054951 is an apocalyptic number.

20054951 is a deficient number, since it is larger than the sum of its proper divisors (4422745).

20054951 is a wasteful number, since it uses less digits than its factorization.

20054951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1478.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 20054951 is about 4478.2754493220. The cubic root of 20054951 is about 271.6901342636.

Adding to 20054951 its reverse (15945002), we get a palindrome (35999953).

The spelling of 20054951 in words is "twenty million, fifty-four thousand, nine hundred fifty-one".