61487556 has 48 divisors (see below), whose sum is σ = 161234304. Its totient is φ = 18095616.

The previous prime is 61487551. The next prime is 61487557. The reversal of 61487556 is 65578416.

61487556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61487551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4981 + ... + 12156.

It is an arithmetic number, because the mean of its divisors is an integer number (3359048).

Almost surely, 2^61487556 is an apocalyptic number.

It is an amenable number.

61487556 is an abundant number, since it is smaller than the sum of its proper divisors (99746748).

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

61487556 is a wasteful number, since it uses less digits than its factorization.

61487556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17180 (or 17178 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 61487556 is about 7841.4001300788. The cubic root of 61487556 is about 394.6957139540.

The spelling of 61487556 in words is "sixty-one million, four hundred eighty-seven thousand, five hundred fifty-six".