261054423 has 24 divisors (see below), whose sum is σ = 431974400. Its totient is φ = 148818384.

The previous prime is 261054413. The next prime is 261054449. The reversal of 261054423 is 324450162.

261054423 is a `hidden beast` number, since 2 + 610 + 5 + 4 + 42 + 3 = 666.

It is not a de Polignac number, because 261054423 - 2¹⁰ = 261053399 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 (261054413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22938 + ... + 32376.

Almost surely, 2^261054423 is an apocalyptic number.

261054423 is a deficient number, since it is larger than the sum of its proper divisors (170919977).

261054423 is a wasteful number, since it uses less digits than its factorization.

261054423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9891 (or 9888 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 261054423 is about 16157.1786831736. The cubic root of 261054423 is about 639.1120686276.

The spelling of 261054423 in words is "two hundred sixty-one million, fifty-four thousand, four hundred twenty-three".