53249691 has 16 divisors (see below), whose sum is σ = 77856768. Its totient is φ = 32104800.

The previous prime is 53249687. The next prime is 53249719. The reversal of 53249691 is 19694235.

53249691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53249691 - 2² = 53249687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53249641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2406 + ... + 10596.

It is an arithmetic number, because the mean of its divisors is an integer number (4866048).

Almost surely, 2^53249691 is an apocalyptic number.

53249691 is a deficient number, since it is larger than the sum of its proper divisors (24607077).

53249691 is a wasteful number, since it uses less digits than its factorization.

53249691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8402.

The product of its digits is 58320, while the sum is 39.

The square root of 53249691 is about 7297.2385873014. The cubic root of 53249691 is about 376.2175324721.

The spelling of 53249691 in words is "fifty-three million, two hundred forty-nine thousand, six hundred ninety-one".