61035520 has 176 divisors, whose sum is σ = 181577088. Its totient is φ = 19169280.

The previous prime is 61035509. The next prime is 61035539. The reversal of 61035520 is 2553016.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61035491 and 61035500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465855 + ... + 465985.

It is an arithmetic number, because the mean of its divisors is an integer number (1031688).

Almost surely, 2^61035520 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 61035520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90788544).

61035520 is an abundant number, since it is smaller than the sum of its proper divisors (120541568).

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

61035520 is a wasteful number, since it uses less digits than its factorization.

61035520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 61035520 is about 7812.5232799653. The cubic root of 61035520 is about 393.7261102496.

Adding to 61035520 its reverse (2553016), we get a palindrome (63588536).

The spelling of 61035520 in words is "sixty-one million, thirty-five thousand, five hundred twenty".