261214545 has 8 divisors (see below), whose sum is σ = 417943296. Its totient is φ = 139314416.

The previous prime is 261214531. The next prime is 261214573. The reversal of 261214545 is 545412162.

261214545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 261214545 - 2¹² = 261210449 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8707137 + ... + 8707166.

It is an arithmetic number, because the mean of its divisors is an integer number (52242912).

Almost surely, 2^261214545 is an apocalyptic number.

It is an amenable number.

261214545 is a deficient number, since it is larger than the sum of its proper divisors (156728751).

261214545 is a wasteful number, since it uses less digits than its factorization.

261214545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17414311.

The product of its digits is 9600, while the sum is 30.

The square root of 261214545 is about 16162.1330584796. The cubic root of 261214545 is about 639.2427118673.

The spelling of 261214545 in words is "two hundred sixty-one million, two hundred fourteen thousand, five hundred forty-five".