53021268 has 18 divisors (see below), whose sum is σ = 134026074. Its totient is φ = 17673744.

The previous prime is 53021239. The next prime is 53021291. The reversal of 53021268 is 86212035.

53021268 is a `hidden beast` number, since 530 + 2 + 126 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 52969284 + 51984 = 7278^2 + 228^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×53021268² = 5622509720655648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 736371 + ... + 736442.

It is an arithmetic number, because the mean of its divisors is an integer number (7445893).

Almost surely, 2^53021268 is an apocalyptic number.

It is an amenable number.

53021268 is an abundant number, since it is smaller than the sum of its proper divisors (81004806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53021268 is a wasteful number, since it uses less digits than its factorization.

53021268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472823 (or 1472818 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 53021268 is about 7281.5704350092. The cubic root of 53021268 is about 375.6788131591.

The spelling of 53021268 in words is "fifty-three million, twenty-one thousand, two hundred sixty-eight".