51453248 has 112 divisors (see below), whose sum is σ = 130356864. Its totient is φ = 19568640.

The previous prime is 51453239. The next prime is 51453257. The reversal of 51453248 is 84235415.

It is an interprime number because it is at equal distance from previous prime (51453239) and next prime (51453257).

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261086 + ... + 261282.

Almost surely, 2^51453248 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 51453248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65178432).

51453248 is an abundant number, since it is smaller than the sum of its proper divisors (78903616).

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

51453248 is a wasteful number, since it uses less digits than its factorization.

51453248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 270 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

The square root of 51453248 is about 7173.0919414155. The cubic root of 51453248 is about 371.9383256139.

The spelling of 51453248 in words is "fifty-one million, four hundred fifty-three thousand, two hundred forty-eight".