53406505 has 8 divisors (see below), whose sum is σ = 65174400. Its totient is φ = 42000816.

The previous prime is 53406481. The next prime is 53406539. The reversal of 53406505 is 50560435.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53406505 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90225 + ... + 90814.

It is an arithmetic number, because the mean of its divisors is an integer number (8146800).

Almost surely, 2^53406505 is an apocalyptic number.

It is an amenable number.

53406505 is a deficient number, since it is larger than the sum of its proper divisors (11767895).

53406505 is a wasteful number, since it uses less digits than its factorization.

53406505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181103.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 53406505 is about 7307.9754378350. The cubic root of 53406505 is about 376.5864758240.

The spelling of 53406505 in words is "fifty-three million, four hundred six thousand, five hundred five".