61256216 has 32 divisors (see below), whose sum is σ = 132503040. Its totient is φ = 26004768.

The previous prime is 61256213. The next prime is 61256227. The reversal of 61256216 is 61265216.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61256213) 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, 881 + ... + 11103.

It is an arithmetic number, because the mean of its divisors is an integer number (4140720).

Almost surely, 2^61256216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61256216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66251520).

61256216 is an abundant number, since it is smaller than the sum of its proper divisors (71246824).

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

61256216 is a wasteful number, since it uses less digits than its factorization.

61256216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10343 (or 10339 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 61256216 is about 7826.6350368469. The cubic root of 61256216 is about 394.2000924791.

The spelling of 61256216 in words is "sixty-one million, two hundred fifty-six thousand, two hundred sixteen".