212556041 has 4 divisors (see below), whose sum is σ = 221797632. Its totient is φ = 203314452.

The previous prime is 212555977. The next prime is 212556061. The reversal of 212556041 is 140655212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212556041 - 2⁶ = 212555977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212556041.

It is not an unprimeable number, because it can be changed into a prime (212556061) 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, 4620761 + ... + 4620806.

It is an arithmetic number, because the mean of its divisors is an integer number (55449408).

Almost surely, 2^212556041 is an apocalyptic number.

It is an amenable number.

212556041 is a deficient number, since it is larger than the sum of its proper divisors (9241591).

212556041 is an equidigital number, since it uses as much as digits as its factorization.

212556041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9241590.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 212556041 is about 14579.3018008408. The cubic root of 212556041 is about 596.7940493855.

The spelling of 212556041 in words is "two hundred twelve million, five hundred fifty-six thousand, forty-one".