20514154 has 4 divisors (see below), whose sum is σ = 30771234. Its totient is φ = 10257076.

The previous prime is 20514149. The next prime is 20514173. The reversal of 20514154 is 45141502.

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

It can be written as a sum of positive squares in only one way, i.e., 16605625 + 3908529 = 4075^2 + 1977^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5128537 + ... + 5128540.

Almost surely, 2^20514154 is an apocalyptic number.

20514154 is a deficient number, since it is larger than the sum of its proper divisors (10257080).

20514154 is a wasteful number, since it uses less digits than its factorization.

20514154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10257079.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 20514154 is about 4529.2553471846. The cubic root of 20514154 is about 273.7481568929.

Adding to 20514154 its reverse (45141502), we get a palindrome (65655656).

The spelling of 20514154 in words is "twenty million, five hundred fourteen thousand, one hundred fifty-four".