53409994 has 8 divisors (see below), whose sum is σ = 87398208. Its totient is φ = 24277260.

The previous prime is 53409947. The next prime is 53410009. The reversal of 53409994 is 49990435.

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

It is a self number, because there is not a number n which added to its sum of digits gives 53409994.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213842 + ... + 1213885.

It is an arithmetic number, because the mean of its divisors is an integer number (10924776).

Almost surely, 2^53409994 is an apocalyptic number.

53409994 is a deficient number, since it is larger than the sum of its proper divisors (33988214).

53409994 is a wasteful number, since it uses less digits than its factorization.

53409994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427740.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 53409994 is about 7308.2141457404. The cubic root of 53409994 is about 376.5946763332.

The spelling of 53409994 in words is "fifty-three million, four hundred nine thousand, nine hundred ninety-four".