212561250 has 80 divisors (see below), whose sum is σ = 579639456. Its totient is φ = 51520000.

The previous prime is 212561231. The next prime is 212561269. The reversal of 212561250 is 52165212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212561231) and next prime (212561269).

It is a super-3 number, since 3×212561250³ (a number of 26 digits) contains 333 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 212561250.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 38674 + ... + 43826.

Almost surely, 2^212561250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212561250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289819728).

212561250 is an abundant number, since it is smaller than the sum of its proper divisors (367078206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212561250 is a wasteful number, since it uses less digits than its factorization.

212561250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5189 (or 5174 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 212561250 is about 14579.4804434177. The cubic root of 212561250 is about 596.7989244525.

The spelling of 212561250 in words is "two hundred twelve million, five hundred sixty-one thousand, two hundred fifty".