61941530 has 64 divisors (see below), whose sum is σ = 134922240. Its totient is φ = 20015424.

The previous prime is 61941521. The next prime is 61941533. The reversal of 61941530 is 3514916.

61941530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61941493 and 61941502.

It is not an unprimeable number, because it can be changed into a prime (61941533) 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 31 ways as a sum of consecutive naturals, for example, 126947 + ... + 127433.

It is an arithmetic number, because the mean of its divisors is an integer number (2108160).

Almost surely, 2^61941530 is an apocalyptic number.

61941530 is an abundant number, since it is smaller than the sum of its proper divisors (72980710).

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

61941530 is a wasteful number, since it uses less digits than its factorization.

61941530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 61941530 is about 7870.2941495220. The cubic root of 61941530 is about 395.6647035982.

The spelling of 61941530 in words is "sixty-one million, nine hundred forty-one thousand, five hundred thirty".