53749664 has 24 divisors (see below), whose sum is σ = 106539300. Its totient is φ = 26692096.

The previous prime is 53749609. The next prime is 53749669. The reversal of 53749664 is 46694735.

It can be written as a sum of positive squares in 2 ways, for example, as 47499664 + 6250000 = 6892^2 + 2500^2 .

It is a super-2 number, since 2×53749664² = 5778052760225792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53749669) 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 3 ways as a sum of consecutive naturals, for example, 869 + ... + 10404.

Almost surely, 2^53749664 is an apocalyptic number.

It is an amenable number.

53749664 is a deficient number, since it is larger than the sum of its proper divisors (52789636).

53749664 is a wasteful number, since it uses less digits than its factorization.

53749664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11432 (or 11424 counting only the distinct ones).

The product of its digits is 544320, while the sum is 44.

The square root of 53749664 is about 7331.4162342620. The cubic root of 53749664 is about 377.3913293329.

The spelling of 53749664 in words is "fifty-three million, seven hundred forty-nine thousand, six hundred sixty-four".