61801212 has 24 divisors (see below), whose sum is σ = 157312512. Its totient is φ = 18727600.

The previous prime is 61801151. The next prime is 61801213. The reversal of 61801212 is 21210816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61801213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233964 + ... + 234227.

It is an arithmetic number, because the mean of its divisors is an integer number (6554688).

Almost surely, 2^61801212 is an apocalyptic number.

It is an amenable number.

61801212 is an abundant number, since it is smaller than the sum of its proper divisors (95511300).

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

61801212 is a wasteful number, since it uses less digits than its factorization.

61801212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468209 (or 468207 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 61801212 is about 7861.3746889459. The cubic root of 61801212 is about 395.3657073481.

The spelling of 61801212 in words is "sixty-one million, eight hundred one thousand, two hundred twelve".