53145442 has 16 divisors (see below), whose sum is σ = 91690560. Its totient is φ = 22630608.

The previous prime is 53145437. The next prime is 53145503. The reversal of 53145442 is 24454135.

It is a self number, because there is not a number n which added to its sum of digits gives 53145442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9892 + ... + 14287.

It is an arithmetic number, because the mean of its divisors is an integer number (5730660).

Almost surely, 2^53145442 is an apocalyptic number.

53145442 is a deficient number, since it is larger than the sum of its proper divisors (38545118).

53145442 is a wasteful number, since it uses less digits than its factorization.

53145442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24345.

The product of its digits is 9600, while the sum is 28.

The square root of 53145442 is about 7290.0920433147. The cubic root of 53145442 is about 375.9718601621.

Adding to 53145442 its reverse (24454135), we get a palindrome (77599577).

The spelling of 53145442 in words is "fifty-three million, one hundred forty-five thousand, four hundred forty-two".