53147442 has 8 divisors (see below), whose sum is σ = 106294896. Its totient is φ = 17715812.

The previous prime is 53147407. The next prime is 53147443. The reversal of 53147442 is 24474135.

It is a sphenic number, since it is the product of 3 distinct primes.

53147442 is an admirable number.

It is a super-2 number, since 2×53147442² = 5649301182286728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53147443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4428948 + ... + 4428959.

It is an arithmetic number, because the mean of its divisors is an integer number (13286862).

Almost surely, 2^53147442 is an apocalyptic number.

53147442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

53147442 is a wasteful number, since it uses less digits than its factorization.

53147442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8857912.

The product of its digits is 13440, while the sum is 30.

The square root of 53147442 is about 7290.2292145035. The cubic root of 53147442 is about 375.9765763664.

The spelling of 53147442 in words is "fifty-three million, one hundred forty-seven thousand, four hundred forty-two".