61601256 has 32 divisors (see below), whose sum is σ = 171115200. Its totient is φ = 20533680.

The previous prime is 61601231. The next prime is 61601279. The reversal of 61601256 is 65210616.

It is a happy number.

61601256 is a `hidden beast` number, since 6 + 1 + 601 + 2 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142380 + ... + 142811.

It is an arithmetic number, because the mean of its divisors is an integer number (5347350).

Almost surely, 2^61601256 is an apocalyptic number.

It is an amenable number.

61601256 is an abundant number, since it is smaller than the sum of its proper divisors (109513944).

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

61601256 is a wasteful number, since it uses less digits than its factorization.

61601256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285206 (or 285196 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 61601256 is about 7848.6467623406. The cubic root of 61601256 is about 394.9388486224.

It can be divided in two parts, 6 and 1601256, that multiplied together give a triangular number (9607536 = T₄₃₈₃).

The spelling of 61601256 in words is "sixty-one million, six hundred one thousand, two hundred fifty-six".