20254051 has 4 divisors (see below), whose sum is σ = 20597400. Its totient is φ = 19910704.

The previous prime is 20254049. The next prime is 20254061. The reversal of 20254051 is 15045202.

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 20254051 - 2¹ = 20254049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20254061) 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, 171586 + ... + 171703.

It is an arithmetic number, because the mean of its divisors is an integer number (5149350).

Almost surely, 2^20254051 is an apocalyptic number.

20254051 is a deficient number, since it is larger than the sum of its proper divisors (343349).

20254051 is an equidigital number, since it uses as much as digits as its factorization.

20254051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343348.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 20254051 is about 4500.4500886023. The cubic root of 20254051 is about 272.5862634056.

Adding to 20254051 its reverse (15045202), we get a palindrome (35299253).

It can be divided in two parts, 2025 and 4051, that multiplied together give a triangular number (8203275 = T₄₀₅₀).

The spelling of 20254051 in words is "twenty million, two hundred fifty-four thousand, fifty-one".