20240051 has 4 divisors (see below), whose sum is σ = 21796992. Its totient is φ = 18683112.

The previous prime is 20240021. The next prime is 20240071. The reversal of 20240051 is 15004202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20240051 - 2⁶ = 20239987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20240021) 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, 778451 + ... + 778476.

It is an arithmetic number, because the mean of its divisors is an integer number (5449248).

Almost surely, 2^20240051 is an apocalyptic number.

20240051 is a deficient number, since it is larger than the sum of its proper divisors (1556941).

20240051 is a wasteful number, since it uses less digits than its factorization.

20240051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556940.

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

The square root of 20240051 is about 4498.8944197436. The cubic root of 20240051 is about 272.5234432599.

Adding to 20240051 its reverse (15004202), we get a palindrome (35244253).

The spelling of 20240051 in words is "twenty million, two hundred forty thousand, fifty-one".