261430153 has 8 divisors (see below), whose sum is σ = 268538688. Its totient is φ = 254368464.

The previous prime is 261430151. The next prime is 261430159. The reversal of 261430153 is 351034162.

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

It is a cyclic number.

It is not a de Polignac number, because 261430153 - 2¹ = 261430151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261430151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250 + ... + 22867.

It is an arithmetic number, because the mean of its divisors is an integer number (33567336).

Almost surely, 2^261430153 is an apocalyptic number.

It is an amenable number.

261430153 is a deficient number, since it is larger than the sum of its proper divisors (7108535).

261430153 is a wasteful number, since it uses less digits than its factorization.

261430153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23423.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 261430153 is about 16168.8018418187. The cubic root of 261430153 is about 639.4185417127.

The spelling of 261430153 in words is "two hundred sixty-one million, four hundred thirty thousand, one hundred fifty-three".