20051514 has 48 divisors (see below), whose sum is σ = 49937472. Its totient is φ = 5696064.

The previous prime is 20051503. The next prime is 20051527. The reversal of 20051514 is 41515002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29017 + ... + 29699.

It is an arithmetic number, because the mean of its divisors is an integer number (1040364).

Almost surely, 2^20051514 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20051514, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24968736).

20051514 is an abundant number, since it is smaller than the sum of its proper divisors (29885958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20051514 is a wasteful number, since it uses less digits than its factorization.

20051514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 20051514 is about 4477.8916914101. The cubic root of 20051514 is about 271.6746127041.

Adding to 20051514 its reverse (41515002), we get a palindrome (61566516).

The spelling of 20051514 in words is "twenty million, fifty-one thousand, five hundred fourteen".