53306491 has 8 divisors (see below), whose sum is σ = 61259744. Its totient is φ = 45437760.

The previous prime is 53306471. The next prime is 53306503. The reversal of 53306491 is 19460335.

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

It is a cyclic number.

It is not a de Polignac number, because 53306491 - 2¹⁵ = 53273723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53306401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19770 + ... + 22303.

It is an arithmetic number, because the mean of its divisors is an integer number (7657468).

Almost surely, 2^53306491 is an apocalyptic number.

53306491 is a deficient number, since it is larger than the sum of its proper divisors (7953253).

53306491 is a wasteful number, since it uses less digits than its factorization.

53306491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42261.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 53306491 is about 7301.1294331768. The cubic root of 53306491 is about 376.3512519484.

The spelling of 53306491 in words is "fifty-three million, three hundred six thousand, four hundred ninety-one".