53561430 has 48 divisors (see below), whose sum is σ = 149975280. Its totient is φ = 13184064.

The previous prime is 53561423. The next prime is 53561449. The reversal of 53561430 is 3416535.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 53561394 and 53561403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21720 + ... + 24059.

It is an arithmetic number, because the mean of its divisors is an integer number (3124485).

Almost surely, 2^53561430 is an apocalyptic number.

53561430 is an abundant number, since it is smaller than the sum of its proper divisors (96413850).

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

53561430 is a wasteful number, since it uses less digits than its factorization.

53561430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45805 (or 45802 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 53561430 is about 7318.5674827797. The cubic root of 53561430 is about 376.9502663136.

Adding to 53561430 its reverse (3416535), we get a palindrome (56977965).

It can be divided in two parts, 5356 and 1430, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 53561430 in words is "fifty-three million, five hundred sixty-one thousand, four hundred thirty".