53207442 has 40 divisors (see below), whose sum is σ = 121493196. Its totient is φ = 17398368.

The previous prime is 53207423. The next prime is 53207459. The reversal of 53207442 is 24470235.

53207442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 53012961 + 194481 = 7281^2 + 441^2 .

It is a super-3 number, since 3×53207442³ (a number of 24 digits) contains 333 as substring.

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

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 5488 + ... + 11684.

Almost surely, 2^53207442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53207442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60746598).

53207442 is an abundant number, since it is smaller than the sum of its proper divisors (68285754).

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

53207442 is a wasteful number, since it uses less digits than its factorization.

53207442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6264 (or 6255 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 53207442 is about 7294.3431506888. The cubic root of 53207442 is about 376.1180075121.

Adding to 53207442 its reverse (24470235), we get a palindrome (77677677).

The spelling of 53207442 in words is "fifty-three million, two hundred seven thousand, four hundred forty-two".