53408842 has 8 divisors (see below), whose sum is σ = 81624996. Its totient is φ = 26200512.

The previous prime is 53408833. The next prime is 53408843. The reversal of 53408842 is 24880435.

It can be written as a sum of positive squares in 2 ways, for example, as 52287361 + 1121481 = 7231^2 + 1059^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 53408798 and 53408807.

It is not an unprimeable number, because it can be changed into a prime (53408843) 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, 251823 + ... + 252034.

Almost surely, 2^53408842 is an apocalyptic number.

53408842 is a deficient number, since it is larger than the sum of its proper divisors (28216154).

53408842 is a wasteful number, since it uses less digits than its factorization.

53408842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503912.

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 53408842 is about 7308.1353298909. The cubic root of 53408842 is about 376.5919687239.

The spelling of 53408842 in words is "fifty-three million, four hundred eight thousand, eight hundred forty-two".