53661244 has 48 divisors (see below), whose sum is σ = 121676800. Its totient is φ = 20108736.

The previous prime is 53661239. The next prime is 53661269. The reversal of 53661244 is 44216635.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3037 + ... + 10795.

Almost surely, 2^53661244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53661244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60838400).

53661244 is an abundant number, since it is smaller than the sum of its proper divisors (68015556).

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

53661244 is a wasteful number, since it uses less digits than its factorization.

53661244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7802 (or 7800 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 53661244 is about 7325.3835394469. The cubic root of 53661244 is about 377.1842752897.

Adding to 53661244 its reverse (44216635), we get a palindrome (97877879).

The spelling of 53661244 in words is "fifty-three million, six hundred sixty-one thousand, two hundred forty-four".