61241520 has 40 divisors (see below), whose sum is σ = 189849456. Its totient is φ = 16331008.

The previous prime is 61241519. The next prime is 61241527. The reversal of 61241520 is 2514216.

61241520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (61241527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127347 + ... + 127826.

Almost surely, 2^61241520 is an apocalyptic number.

61241520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61241520 is an abundant number, since it is smaller than the sum of its proper divisors (128607936).

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

61241520 is a wasteful number, since it uses less digits than its factorization.

61241520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255189 (or 255183 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 61241520 is about 7825.6961351691. The cubic root of 61241520 is about 394.1685657309.

Adding to 61241520 its reverse (2514216), we get a palindrome (63755736).

The spelling of 61241520 in words is "sixty-one million, two hundred forty-one thousand, five hundred twenty".