61253830 has 96 divisors (see below), whose sum is σ = 132378624. Its totient is φ = 20328000.

The previous prime is 61253827. The next prime is 61253921. The reversal of 61253830 is 3835216.

61253830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

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 47 ways as a sum of consecutive naturals, for example, 862695 + ... + 862765.

It is an arithmetic number, because the mean of its divisors is an integer number (1378944).

Almost surely, 2^61253830 is an apocalyptic number.

61253830 is an abundant number, since it is smaller than the sum of its proper divisors (71124794).

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

61253830 is a wasteful number, since it uses less digits than its factorization.

61253830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 61253830 is about 7826.4826071486. The cubic root of 61253830 is about 394.1949742305.

The spelling of 61253830 in words is "sixty-one million, two hundred fifty-three thousand, eight hundred thirty".