553600261 has 4 divisors (see below), whose sum is σ = 553869900. Its totient is φ = 553330624.

The previous prime is 553600237. The next prime is 553600273. The reversal of 553600261 is 162006355.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 268632100 + 284968161 = 16390^2 + 16881^2 .

It is a cyclic number.

It is not a de Polignac number, because 553600261 - 2¹⁵ = 553567493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553600231) 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, 131716 + ... + 135853.

It is an arithmetic number, because the mean of its divisors is an integer number (138467475).

Almost surely, 2^553600261 is an apocalyptic number.

It is an amenable number.

553600261 is a deficient number, since it is larger than the sum of its proper divisors (269639).

553600261 is a wasteful number, since it uses less digits than its factorization.

553600261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269638.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 553600261 is about 23528.7114181801. The cubic root of 553600261 is about 821.1051235658.

The spelling of 553600261 in words is "five hundred fifty-three million, six hundred thousand, two hundred sixty-one".