53491916 has 24 divisors (see below), whose sum is σ = 98795760. Its totient is φ = 25272000.

The previous prime is 53491913. The next prime is 53491931. The reversal of 53491916 is 61919435.

It is a super-2 number, since 2×53491916² = 5722770154702112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 53491916.

It is not an unprimeable number, because it can be changed into a prime (53491913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40466 + ... + 41766.

It is an arithmetic number, because the mean of its divisors is an integer number (4116490).

Almost surely, 2^53491916 is an apocalyptic number.

It is an amenable number.

53491916 is a deficient number, since it is larger than the sum of its proper divisors (45303844).

53491916 is a wasteful number, since it uses less digits than its factorization.

53491916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865 (or 1863 counting only the distinct ones).

The product of its digits is 29160, while the sum is 38.

The square root of 53491916 is about 7313.8167874236. The cubic root of 53491916 is about 376.7871223941.

The spelling of 53491916 in words is "fifty-three million, four hundred ninety-one thousand, nine hundred sixteen".