51442048 has 32 divisors (see below), whose sum is σ = 117124560. Its totient is φ = 22046208.

The previous prime is 51442043. The next prime is 51442057. The reversal of 51442048 is 84024415.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51442043) 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, 27811 + ... + 29602.

Almost surely, 2^51442048 is an apocalyptic number.

It is an amenable number.

51442048 is an abundant number, since it is smaller than the sum of its proper divisors (65682512).

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

51442048 is an equidigital number, since it uses as much as digits as its factorization.

51442048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57434 (or 57422 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 51442048 is about 7172.3112035103. The cubic root of 51442048 is about 371.9113366372.

The spelling of 51442048 in words is "fifty-one million, four hundred forty-two thousand, forty-eight".