261056254 has 8 divisors (see below), whose sum is σ = 397429128. Its totient is φ = 128579880.

The previous prime is 261056251. The next prime is 261056273. The reversal of 261056254 is 452650162.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261056251) 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, 973957 + ... + 974224.

It is an arithmetic number, because the mean of its divisors is an integer number (49678641).

Almost surely, 2^261056254 is an apocalyptic number.

261056254 is a deficient number, since it is larger than the sum of its proper divisors (136372874).

261056254 is a wasteful number, since it uses less digits than its factorization.

261056254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948250.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 261056254 is about 16157.2353451944. The cubic root of 261056254 is about 639.1135628390.

The spelling of 261056254 in words is "two hundred sixty-one million, fifty-six thousand, two hundred fifty-four".