20140051 has 4 divisors (see below), whose sum is σ = 20251504. Its totient is φ = 20028600.

The previous prime is 20140031. The next prime is 20140067. The reversal of 20140051 is 15004102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15004102 = 2 ⋅7502051.

It is a cyclic number.

It is not a de Polignac number, because 20140051 - 2¹⁹ = 19615763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20140031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55455 + ... + 55816.

It is an arithmetic number, because the mean of its divisors is an integer number (5062876).

Almost surely, 2^20140051 is an apocalyptic number.

20140051 is a deficient number, since it is larger than the sum of its proper divisors (111453).

20140051 is a wasteful number, since it uses less digits than its factorization.

20140051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111452.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 20140051 is about 4487.7668165804. The cubic root of 20140051 is about 272.0738832958.

Adding to 20140051 its reverse (15004102), we get a palindrome (35144153).

The spelling of 20140051 in words is "twenty million, one hundred forty thousand, fifty-one".