53020287 has 6 divisors (see below), whose sum is σ = 76584872. Its totient is φ = 35346852.

The previous prime is 53020271. The next prime is 53020307. The reversal of 53020287 is 78202035.

It is not a de Polignac number, because 53020287 - 2⁴ = 53020271 is a prime.

It is a super-2 number, since 2×53020287² = 5622301667124738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53020287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53020217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2945563 + ... + 2945580.

Almost surely, 2^53020287 is an apocalyptic number.

53020287 is a deficient number, since it is larger than the sum of its proper divisors (23564585).

53020287 is a wasteful number, since it uses less digits than its factorization.

53020287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5891149 (or 5891146 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 53020287 is about 7281.5030728552. The cubic root of 53020287 is about 375.6764962072.

It can be divided in two parts, 5302028 and 7, that added together give a palindrome (5302035).

The spelling of 53020287 in words is "fifty-three million, twenty thousand, two hundred eighty-seven".