51155016 has 64 divisors (see below), whose sum is σ = 143311680. Its totient is φ = 15079680.

The previous prime is 51154997. The next prime is 51155021. The reversal of 51155016 is 61055115.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 7150 + ... + 12386.

It is an arithmetic number, because the mean of its divisors is an integer number (2239245).

Almost surely, 2^51155016 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 51155016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71655840).

51155016 is an abundant number, since it is smaller than the sum of its proper divisors (92156664).

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

51155016 is a wasteful number, since it uses less digits than its factorization.

51155016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5294 (or 5290 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 51155016 is about 7152.2734847040. The cubic root of 51155016 is about 371.2183262665.

Subtracting 51155016 from its reverse (61055115), we obtain a palindrome (9900099).

It can be divided in two parts, 511550 and 16, that added together give a triangular number (511566 = T₁₀₁₁).

The spelling of 51155016 in words is "fifty-one million, one hundred fifty-five thousand, sixteen".