51901248 has 168 divisors, whose sum is σ = 166307008. Its totient is φ = 13989888.

The previous prime is 51901231. The next prime is 51901249. The reversal of 51901248 is 84210915.

It is a happy number.

51901248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51901249) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 710940 + ... + 711012.

Almost surely, 2^51901248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51901248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83153504).

51901248 is an abundant number, since it is smaller than the sum of its proper divisors (114405760).

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

51901248 is a wasteful number, since it uses less digits than its factorization.

51901248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 51901248 is about 7204.2520777663. The cubic root of 51901248 is about 373.0146884272.

The spelling of 51901248 in words is "fifty-one million, nine hundred one thousand, two hundred forty-eight".