52161451 has 4 divisors (see below), whose sum is σ = 53374552. Its totient is φ = 50948352.

The previous prime is 52161427. The next prime is 52161481. The reversal of 52161451 is 15416125.

It is a happy number.

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 52161451 - 2⁵ = 52161419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52161481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606486 + ... + 606571.

It is an arithmetic number, because the mean of its divisors is an integer number (13343638).

Almost surely, 2^52161451 is an apocalyptic number.

52161451 is a deficient number, since it is larger than the sum of its proper divisors (1213101).

52161451 is a wasteful number, since it uses less digits than its factorization.

52161451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213100.

The product of its digits is 1200, while the sum is 25.

The square root of 52161451 is about 7222.2884877302. The cubic root of 52161451 is about 373.6370099496.

Adding to 52161451 its reverse (15416125), we get a palindrome (67577576).

The spelling of 52161451 in words is "fifty-two million, one hundred sixty-one thousand, four hundred fifty-one".