212144553 has 6 divisors (see below), whose sum is σ = 306431034. Its totient is φ = 141429696.

The previous prime is 212144551. The next prime is 212144627. The reversal of 212144553 is 355441212.

212144553 is a `hidden beast` number, since 212 + 1 + 445 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 187224489 + 24920064 = 13683^2 + 4992^2 .

It is not a de Polignac number, because 212144553 - 2¹ = 212144551 is a prime.

It is a super-2 number, since 2×212144553² = 90010622735139618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212144551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11785800 + ... + 11785817.

It is an arithmetic number, because the mean of its divisors is an integer number (51071839).

Almost surely, 2^212144553 is an apocalyptic number.

It is an amenable number.

212144553 is a deficient number, since it is larger than the sum of its proper divisors (94286481).

212144553 is a wasteful number, since it uses less digits than its factorization.

212144553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23571623 (or 23571620 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 212144553 is about 14565.1829030740. The cubic root of 212144553 is about 596.4086886931.

Adding to 212144553 its reverse (355441212), we get a palindrome (567585765).

The spelling of 212144553 in words is "two hundred twelve million, one hundred forty-four thousand, five hundred fifty-three".