261610053 has 8 divisors (see below), whose sum is σ = 357321216. Its totient is φ = 170152800.

The previous prime is 261610049. The next prime is 261610057. The reversal of 261610053 is 350016162.

It is an interprime number because it is at equal distance from previous prime (261610049) and next prime (261610057).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 261610053 - 2² = 261610049 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261610057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1063333 + ... + 1063578.

It is an arithmetic number, because the mean of its divisors is an integer number (44665152).

Almost surely, 2^261610053 is an apocalyptic number.

It is an amenable number.

261610053 is a deficient number, since it is larger than the sum of its proper divisors (95711163).

261610053 is a wasteful number, since it uses less digits than its factorization.

261610053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126955.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 261610053 is about 16174.3640678699. The cubic root of 261610053 is about 639.5651774630.

The spelling of 261610053 in words is "two hundred sixty-one million, six hundred ten thousand, fifty-three".