61505148 has 12 divisors (see below), whose sum is σ = 143512040. Its totient is φ = 20501712.

The previous prime is 61505131. The next prime is 61505149. The reversal of 61505148 is 84150516.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61505149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2562703 + ... + 2562726.

Almost surely, 2^61505148 is an apocalyptic number.

It is an amenable number.

61505148 is an abundant number, since it is smaller than the sum of its proper divisors (82006892).

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

61505148 is a wasteful number, since it uses less digits than its factorization.

61505148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5125436 (or 5125434 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 61505148 is about 7842.5217883025. The cubic root of 61505148 is about 394.7333520571.

The spelling of 61505148 in words is "sixty-one million, five hundred five thousand, one hundred forty-eight".