214861553 has 4 divisors (see below), whose sum is σ = 220668660. Its totient is φ = 209054448.

The previous prime is 214861541. The next prime is 214861571. The reversal of 214861553 is 355168412.

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

It can be written as a sum of positive squares in 2 ways, for example, as 89264704 + 125596849 = 9448^2 + 11207^2 .

It is a cyclic number.

It is not a de Polignac number, because 214861553 - 2¹⁸ = 214599409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214861513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2903498 + ... + 2903571.

It is an arithmetic number, because the mean of its divisors is an integer number (55167165).

Almost surely, 2^214861553 is an apocalyptic number.

It is an amenable number.

214861553 is a deficient number, since it is larger than the sum of its proper divisors (5807107).

214861553 is an equidigital number, since it uses as much as digits as its factorization.

214861553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5807106.

The product of its digits is 28800, while the sum is 35.

The square root of 214861553 is about 14658.1565348443. The cubic root of 214861553 is about 598.9440250258.

The spelling of 214861553 in words is "two hundred fourteen million, eight hundred sixty-one thousand, five hundred fifty-three".