53021764 has 12 divisors (see below), whose sum is σ = 92911504. Its totient is φ = 26475624.

The previous prime is 53021753. The next prime is 53021767. The reversal of 53021764 is 46712035.

It is a super-2 number, since 2×53021764² = 5622614915343392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53021767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5274 + ... + 11569.

Almost surely, 2^53021764 is an apocalyptic number.

It is an amenable number.

53021764 is a deficient number, since it is larger than the sum of its proper divisors (39889740).

53021764 is a wasteful number, since it uses less digits than its factorization.

53021764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17634 (or 17632 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 53021764 is about 7281.6044935165. The cubic root of 53021764 is about 375.6799846142.

Adding to 53021764 its reverse (46712035), we get a palindrome (99733799).

The spelling of 53021764 in words is "fifty-three million, twenty-one thousand, seven hundred sixty-four".