53250642 has 48 divisors (see below), whose sum is σ = 120869280. Its totient is φ = 17375472.

The previous prime is 53250629. The next prime is 53250649. The reversal of 53250642 is 24605235.

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 (53250649) by changing a digit.

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, 488484 + ... + 488592.

It is an arithmetic number, because the mean of its divisors is an integer number (2518110).

Almost surely, 2^53250642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53250642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60434640).

53250642 is an abundant number, since it is smaller than the sum of its proper divisors (67618638).

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

53250642 is a wasteful number, since it uses less digits than its factorization.

53250642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 53250642 is about 7297.3037486458. The cubic root of 53250642 is about 376.2197721142.

Adding to 53250642 its reverse (24605235), we get a palindrome (77855877).

The spelling of 53250642 in words is "fifty-three million, two hundred fifty thousand, six hundred forty-two".