61313544 has 32 divisors (see below), whose sum is σ = 170316000. Its totient is φ = 20437776.

The previous prime is 61313537. The next prime is 61313557. The reversal of 61313544 is 44531316.

61313544 is a `hidden beast` number, since 613 + 1 + 3 + 5 + 44 = 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141714 + ... + 142145.

It is an arithmetic number, because the mean of its divisors is an integer number (5322375).

Almost surely, 2^61313544 is an apocalyptic number.

It is an amenable number.

61313544 is an abundant number, since it is smaller than the sum of its proper divisors (109002456).

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

61313544 is a wasteful number, since it uses less digits than its factorization.

61313544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283874 (or 283864 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 61313544 is about 7830.2965461086. The cubic root of 61313544 is about 394.3230277947.

The spelling of 61313544 in words is "sixty-one million, three hundred thirteen thousand, five hundred forty-four".