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212153033 = 281754993
BaseRepresentation
bin11001010010100…
…11001011001001
3112210012111020202
430221103023021
5413302344113
633015101545
75154161651
oct1451231311
9483174222
10212153033
11a9833794
125b0718b5
1334c50b51
1420267361
151395a258
hexca532c9

212153033 has 4 divisors (see below), whose sum is σ = 212908308. Its totient is φ = 211397760.

The previous prime is 212153027. The next prime is 212153077. The reversal of 212153033 is 330351212.

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 69422224 + 142730809 = 8332^2 + 11947^2 .

It is a cyclic number.

It is not a de Polignac number, because 212153033 - 24 = 212153017 is a prime.

It is a super-2 number, since 2×2121530332 = 90017818822198178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212152996 and 212153014.

It is not an unprimeable number, because it can be changed into a prime (212153003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377216 + ... + 377777.

It is an arithmetic number, because the mean of its divisors is an integer number (53227077).

Almost surely, 2212153033 is an apocalyptic number.

It is an amenable number.

212153033 is a deficient number, since it is larger than the sum of its proper divisors (755275).

212153033 is an equidigital number, since it uses as much as digits as its factorization.

212153033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755274.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 212153033 is about 14565.4740053319. The cubic root of 212153033 is about 596.4166352846.

The spelling of 212153033 in words is "two hundred twelve million, one hundred fifty-three thousand, thirty-three".

Divisors: 1 281 754993 212153033