20451514 has 4 divisors (see below), whose sum is σ = 30677274. Its totient is φ = 10225756.

The previous prime is 20451511. The next prime is 20451517. The reversal of 20451514 is 41515402.

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

It is an interprime number because it is at equal distance from previous prime (20451511) and next prime (20451517).

It can be written as a sum of positive squares in only one way, i.e., 12425625 + 8025889 = 3525^2 + 2833^2 .

It is not an unprimeable number, because it can be changed into a prime (20451511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5112877 + ... + 5112880.

Almost surely, 2^20451514 is an apocalyptic number.

20451514 is a deficient number, since it is larger than the sum of its proper divisors (10225760).

20451514 is a wasteful number, since it uses less digits than its factorization.

20451514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10225759.

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

The square root of 20451514 is about 4522.3350163384. The cubic root of 20451514 is about 273.4692426757.

Adding to 20451514 its reverse (41515402), we get a palindrome (61966916).

The spelling of 20451514 in words is "twenty million, four hundred fifty-one thousand, five hundred fourteen".