61280544 has 48 divisors (see below), whose sum is σ = 173238912. Its totient is φ = 18855168.

The previous prime is 61280503. The next prime is 61280551. The reversal of 61280544 is 44508216.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23304 + ... + 25799.

It is an arithmetic number, because the mean of its divisors is an integer number (3609144).

Almost surely, 2^61280544 is an apocalyptic number.

It is an amenable number.

61280544 is an abundant number, since it is smaller than the sum of its proper divisors (111958368).

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

61280544 is a wasteful number, since it uses less digits than its factorization.

61280544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49129 (or 49121 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 61280544 is about 7828.1890626121. The cubic root of 61280544 is about 394.2522712956.

The spelling of 61280544 in words is "sixty-one million, two hundred eighty thousand, five hundred forty-four".