52181451 has 12 divisors (see below), whose sum is σ = 86140912. Its totient is φ = 29817936.

The previous prime is 52181443. The next prime is 52181453. The reversal of 52181451 is 15418125.

It is not a de Polignac number, because 52181451 - 2³ = 52181443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52181453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 414076 + ... + 414201.

Almost surely, 2^52181451 is an apocalyptic number.

52181451 is a deficient number, since it is larger than the sum of its proper divisors (33959461).

52181451 is a wasteful number, since it uses less digits than its factorization.

52181451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828290 (or 828287 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

The square root of 52181451 is about 7223.6729577134. The cubic root of 52181451 is about 373.6847577606.

Adding to 52181451 its reverse (15418125), we get a palindrome (67599576).

It can be divided in two parts, 52 and 181451, that added together give a triangular number (181503 = T₆₀₂).

The spelling of 52181451 in words is "fifty-two million, one hundred eighty-one thousand, four hundred fifty-one".