261954093 has 8 divisors (see below), whose sum is σ = 349502400. Its totient is φ = 174520928.

The previous prime is 261954079. The next prime is 261954103. The reversal of 261954093 is 390459162.

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 261954093 - 2⁸ = 261953837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261954023) 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, 23328 + ... + 32681.

It is an arithmetic number, because the mean of its divisors is an integer number (43687800).

Almost surely, 2^261954093 is an apocalyptic number.

It is an amenable number.

261954093 is a deficient number, since it is larger than the sum of its proper divisors (87548307).

261954093 is a wasteful number, since it uses less digits than its factorization.

261954093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57571.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 261954093 is about 16184.9959221496. The cubic root of 261954093 is about 639.8454159529.

The spelling of 261954093 in words is "two hundred sixty-one million, nine hundred fifty-four thousand, ninety-three".