53280261 has 20 divisors (see below), whose sum is σ = 84275532. Its totient is φ = 33429888.

The previous prime is 53280251. The next prime is 53280263. The reversal of 53280261 is 16208235.

It can be written as a sum of positive squares in 2 ways, for example, as 43639236 + 9641025 = 6606^2 + 3105^2 .

It is not a de Polignac number, because 53280261 - 2⁷ = 53280133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53280263) 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, 17970 + ... + 20723.

Almost surely, 2^53280261 is an apocalyptic number.

53280261 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

53280261 is a deficient number, since it is larger than the sum of its proper divisors (30995271).

53280261 is a wasteful number, since it uses less digits than its factorization.

53280261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38722 (or 38713 counting only the distinct ones).

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

The square root of 53280261 is about 7299.3329147258. The cubic root of 53280261 is about 376.2895126695.

Adding to 53280261 its reverse (16208235), we get a palindrome (69488496).

The spelling of 53280261 in words is "fifty-three million, two hundred eighty thousand, two hundred sixty-one".