53021061 has 20 divisors (see below), whose sum is σ = 80000844. Its totient is φ = 34992000.

The previous prime is 53021009. The next prime is 53021081. The reversal of 53021061 is 16012035.

It can be written as a sum of positive squares in 2 ways, for example, as 50680161 + 2340900 = 7119^2 + 1530^2 .

It is not a de Polignac number, because 53021061 - 2⁹ = 53020549 is a prime.

It is a super-2 number, since 2×53021061² = 5622465819131442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53021081) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4941 + ... + 11421.

Almost surely, 2^53021061 is an apocalyptic number.

It is an amenable number.

53021061 is a deficient number, since it is larger than the sum of its proper divisors (26979783).

53021061 is a wasteful number, since it uses less digits than its factorization.

53021061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6594 (or 6585 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 53021061 is about 7281.5562210286. The cubic root of 53021061 is about 375.6783242634.

Adding to 53021061 its reverse (16012035), we get a palindrome (69033096).

The spelling of 53021061 in words is "fifty-three million, twenty-one thousand, sixty-one".