214401561 has 32 divisors (see below), whose sum is σ = 327601152. Its totient is φ = 123456960.

The previous prime is 214401547. The next prime is 214401563. The reversal of 214401561 is 165104412.

It is a happy number.

It is not a de Polignac number, because 214401561 - 2¹³ = 214393369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (214401563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122851 + ... + 124583.

It is an arithmetic number, because the mean of its divisors is an integer number (10237536).

Almost surely, 2^214401561 is an apocalyptic number.

It is an amenable number.

214401561 is a deficient number, since it is larger than the sum of its proper divisors (113199591).

214401561 is a wasteful number, since it uses less digits than its factorization.

214401561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 214401561 is about 14642.4574781694. The cubic root of 214401561 is about 598.5162979602.

Adding to 214401561 its reverse (165104412), we get a palindrome (379505973).

The spelling of 214401561 in words is "two hundred fourteen million, four hundred one thousand, five hundred sixty-one".