51055120 has 40 divisors (see below), whose sum is σ = 119010240. Its totient is φ = 20369280.

The previous prime is 51055099. The next prime is 51055129. The reversal of 51055120 is 2155015.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (51055129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49005 + ... + 50035.

It is an arithmetic number, because the mean of its divisors is an integer number (2975256).

Almost surely, 2^51055120 is an apocalyptic number.

It is an amenable number.

51055120 is an abundant number, since it is smaller than the sum of its proper divisors (67955120).

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

51055120 is a wasteful number, since it uses less digits than its factorization.

51055120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663 (or 1657 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 51055120 is about 7145.2865582844. The cubic root of 51055120 is about 370.9765292485.

The spelling of 51055120 in words is "fifty-one million, fifty-five thousand, one hundred twenty".