212450005 has 8 divisors (see below), whose sum is σ = 255021624. Its totient is φ = 169905600.

The previous prime is 212449999. The next prime is 212450053. The reversal of 212450005 is 500054212.

It can be written as a sum of positive squares in 4 ways, for example, as 32058244 + 180391761 = 5662^2 + 13431^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212450005 - 2¹¹ = 212447957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19935 + ... + 28675.

It is an arithmetic number, because the mean of its divisors is an integer number (31877703).

Almost surely, 2^212450005 is an apocalyptic number.

It is an amenable number.

212450005 is a deficient number, since it is larger than the sum of its proper divisors (42571619).

212450005 is an equidigital number, since it uses as much as digits as its factorization.

212450005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13607.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 212450005 is about 14575.6648218872. The cubic root of 212450005 is about 596.6947937110.

The spelling of 212450005 in words is "two hundred twelve million, four hundred fifty thousand, five".