52661430 has 48 divisors (see below), whose sum is σ = 137951424. Its totient is φ = 13937280.

The previous prime is 52661417. The next prime is 52661437. The reversal of 52661430 is 3416625.

52661430 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 = 52661394 and 52661403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52661437) 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 23 ways as a sum of consecutive naturals, for example, 10195 + ... + 14465.

It is an arithmetic number, because the mean of its divisors is an integer number (2873988).

Almost surely, 2^52661430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52661430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68975712).

52661430 is an abundant number, since it is smaller than the sum of its proper divisors (85289994).

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

52661430 is a wasteful number, since it uses less digits than its factorization.

52661430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421 (or 4418 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 52661430 is about 7256.8195512910. The cubic root of 52661430 is about 374.8270135474.

The spelling of 52661430 in words is "fifty-two million, six hundred sixty-one thousand, four hundred thirty".