61530204 has 24 divisors (see below), whose sum is σ = 145053328. Its totient is φ = 20298240.

The previous prime is 61530197. The next prime is 61530241. The reversal of 61530204 is 40203516.

It is a happy number.

61530204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 25267 + ... + 27594.

Almost surely, 2^61530204 is an apocalyptic number.

It is an amenable number.

61530204 is an abundant number, since it is smaller than the sum of its proper divisors (83523124).

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

61530204 is a wasteful number, since it uses less digits than its factorization.

61530204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52965 (or 52963 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 61530204 is about 7844.1190709983. The cubic root of 61530204 is about 394.7869470077.

The spelling of 61530204 in words is "sixty-one million, five hundred thirty thousand, two hundred four".