53442768 has 40 divisors (see below), whose sum is σ = 138607200. Its totient is φ = 17743744.

The previous prime is 53442757. The next prime is 53442769. The reversal of 53442768 is 86724435.

It is a happy number.

It is a super-4 number, since 4×53442768⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53442769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10843 + ... + 14981.

It is an arithmetic number, because the mean of its divisors is an integer number (3465180).

Almost surely, 2^53442768 is an apocalyptic number.

It is an amenable number.

53442768 is an abundant number, since it is smaller than the sum of its proper divisors (85164432).

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

53442768 is a wasteful number, since it uses less digits than its factorization.

53442768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4419 (or 4413 counting only the distinct ones).

The product of its digits is 161280, while the sum is 39.

The square root of 53442768 is about 7310.4560733240. The cubic root of 53442768 is about 376.6716905726.

The spelling of 53442768 in words is "fifty-three million, four hundred forty-two thousand, seven hundred sixty-eight".