53515242 has 80 divisors (see below), whose sum is σ = 133293600. Its totient is φ = 15910560.

The previous prime is 53515223. The next prime is 53515249. The reversal of 53515242 is 24251535.

It is a happy number.

53515242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×53515242² = 5727762252637128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (53515249) 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 39 ways as a sum of consecutive naturals, for example, 104884 + ... + 105392.

It is an arithmetic number, because the mean of its divisors is an integer number (1666170).

Almost surely, 2^53515242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53515242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66646800).

53515242 is an abundant number, since it is smaller than the sum of its proper divisors (79778358).

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

53515242 is a wasteful number, since it uses less digits than its factorization.

53515242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 584 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 53515242 is about 7315.4112666343. The cubic root of 53515242 is about 376.8418824393.

Adding to 53515242 its reverse (24251535), we get a palindrome (77766777).

The spelling of 53515242 in words is "fifty-three million, five hundred fifteen thousand, two hundred forty-two".