61622250 has 32 divisors (see below), whose sum is σ = 153811008. Its totient is φ = 16432400.

The previous prime is 61622233. The next prime is 61622273. The reversal of 61622250 is 5222616.

It is a self number, because there is not a number n which added to its sum of digits gives 61622250.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40332 + ... + 41831.

It is an arithmetic number, because the mean of its divisors is an integer number (4806594).

Almost surely, 2^61622250 is an apocalyptic number.

61622250 is an abundant number, since it is smaller than the sum of its proper divisors (92188758).

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

61622250 is a wasteful number, since it uses less digits than its factorization.

61622250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82183 (or 82173 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 61622250 is about 7849.9840764170. The cubic root of 61622250 is about 394.9837092037.

Adding to 61622250 its reverse (5222616), we get a palindrome (66844866).

The spelling of 61622250 in words is "sixty-one million, six hundred twenty-two thousand, two hundred fifty".