261054334 has 4 divisors (see below), whose sum is σ = 391581504. Its totient is φ = 130527166.

The previous prime is 261054331. The next prime is 261054361. The reversal of 261054334 is 433450162.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261054331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65263582 + ... + 65263585.

It is an arithmetic number, because the mean of its divisors is an integer number (97895376).

Almost surely, 2^261054334 is an apocalyptic number.

261054334 is a deficient number, since it is larger than the sum of its proper divisors (130527170).

261054334 is a wasteful number, since it uses less digits than its factorization.

261054334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130527169.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 261054334 is about 16157.1759289797. The cubic root of 261054334 is about 639.1119959978. Note that the first 3 decimals are identical.

The spelling of 261054334 in words is "two hundred sixty-one million, fifty-four thousand, three hundred thirty-four".