51893520 has 320 divisors, whose sum is σ = 205701120. Its totient is φ = 10543104.

The previous prime is 51893489. The next prime is 51893521. The reversal of 51893520 is 2539815.

51893520 = T₁₁₉ + T₁₂₀ + ... + T₆₇₈.

It is not an unprimeable number, because it can be changed into a prime (51893521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 656841 + ... + 656919.

It is an arithmetic number, because the mean of its divisors is an integer number (642816).

Almost surely, 2^51893520 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 51893520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102850560).

51893520 is an abundant number, since it is smaller than the sum of its proper divisors (153807600).

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

51893520 is a wasteful number, since it uses less digits than its factorization.

51893520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 51893520 is about 7203.7157078830. The cubic root of 51893520 is about 372.9961737755.

The spelling of 51893520 in words is "fifty-one million, eight hundred ninety-three thousand, five hundred twenty".