214857261 has 24 divisors (see below), whose sum is σ = 326532024. Its totient is φ = 135959040.

The previous prime is 214857221. The next prime is 214857277. The reversal of 214857261 is 162758412.

214857261 is a `hidden beast` number, since 21 + 4 + 8 + 572 + 61 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 64304361 + 150552900 = 8019^2 + 12270^2 .

It is not a de Polignac number, because 214857261 - 2¹⁴ = 214840877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214857221) 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, 5785 + ... + 21521.

It is an arithmetic number, because the mean of its divisors is an integer number (13605501).

Almost surely, 2^214857261 is an apocalyptic number.

It is an amenable number.

214857261 is a deficient number, since it is larger than the sum of its proper divisors (111674763).

214857261 is a wasteful number, since it uses less digits than its factorization.

214857261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15821 (or 15818 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 214857261 is about 14658.0101309830. The cubic root of 214857261 is about 598.9400368997.

The spelling of 214857261 in words is "two hundred fourteen million, eight hundred fifty-seven thousand, two hundred sixty-one".