20141551 has 4 divisors (see below), whose sum is σ = 20185704. Its totient is φ = 20097400.

The previous prime is 20141543. The next prime is 20141567. The reversal of 20141551 is 15514102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15514102 = 2 ⋅7757051.

It is a cyclic number.

It is not a de Polignac number, because 20141551 - 2³ = 20141543 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20141591) 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, 21385 + ... + 22306.

It is an arithmetic number, because the mean of its divisors is an integer number (5046426).

Almost surely, 2^20141551 is an apocalyptic number.

20141551 is a deficient number, since it is larger than the sum of its proper divisors (44153).

20141551 is an equidigital number, since it uses as much as digits as its factorization.

20141551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44152.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 20141551 is about 4487.9339344514. The cubic root of 20141551 is about 272.0806376761.

Adding to 20141551 its reverse (15514102), we get a palindrome (35655653).

The spelling of 20141551 in words is "twenty million, one hundred forty-one thousand, five hundred fifty-one".