214138561 has 16 divisors (see below), whose sum is σ = 264006400. Its totient is φ = 169138368.

The previous prime is 214138549. The next prime is 214138567. The reversal of 214138561 is 165831412.

It is not a de Polignac number, because 214138561 - 2⁷ = 214138433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (214138567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62860 + ... + 66178.

It is an arithmetic number, because the mean of its divisors is an integer number (16500400).

Almost surely, 2^214138561 is an apocalyptic number.

It is an amenable number.

214138561 is a deficient number, since it is larger than the sum of its proper divisors (49867839).

214138561 is a wasteful number, since it uses less digits than its factorization.

214138561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048.

The product of its digits is 5760, while the sum is 31.

The square root of 214138561 is about 14633.4739894531. The cubic root of 214138561 is about 598.2714704617.

Adding to 214138561 its reverse (165831412), we get a palindrome (379969973).

The spelling of 214138561 in words is "two hundred fourteen million, one hundred thirty-eight thousand, five hundred sixty-one".