61087520 has 96 divisors (see below), whose sum is σ = 159268032. Its totient is φ = 21998592.

The previous prime is 61087519. The next prime is 61087529. The reversal of 61087520 is 2578016.

It is not an unprimeable number, because it can be changed into a prime (61087529) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 89099 + ... + 89781.

It is an arithmetic number, because the mean of its divisors is an integer number (1659042).

Almost surely, 2^61087520 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 61087520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79634016).

61087520 is an abundant number, since it is smaller than the sum of its proper divisors (98180512).

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

61087520 is a wasteful number, since it uses less digits than its factorization.

61087520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754 (or 746 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 61087520 is about 7815.8505615192. The cubic root of 61087520 is about 393.8378918602.

The spelling of 61087520 in words is "sixty-one million, eighty-seven thousand, five hundred twenty".