61047504 has 120 divisors (see below), whose sum is σ = 198237312. Its totient is φ = 17176320.

The previous prime is 61047473. The next prime is 61047533. The reversal of 61047504 is 40574016.

61047504 is a `hidden beast` number, since 610 + 47 + 5 + 0 + 4 = 666.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 71142 + ... + 71994.

Almost surely, 2^61047504 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 61047504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99118656).

61047504 is an abundant number, since it is smaller than the sum of its proper divisors (137189808).

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

61047504 is a wasteful number, since it uses less digits than its factorization.

61047504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 61047504 is about 7813.2902160358. The cubic root of 61047504 is about 393.7518772397.

The spelling of 61047504 in words is "sixty-one million, forty-seven thousand, five hundred four".