51271850 has 48 divisors (see below), whose sum is σ = 109600128. Its totient is φ = 17480640.

The previous prime is 51271819. The next prime is 51271859. The reversal of 51271850 is 5817215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51271859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91772 + ... + 92328.

It is an arithmetic number, because the mean of its divisors is an integer number (2283336).

Almost surely, 2^51271850 is an apocalyptic number.

51271850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51271850 is an abundant number, since it is smaller than the sum of its proper divisors (58328278).

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

51271850 is a wasteful number, since it uses less digits than its factorization.

51271850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 51271850 is about 7160.4364392123. The cubic root of 51271850 is about 371.5007224586.

The spelling of 51271850 in words is "fifty-one million, two hundred seventy-one thousand, eight hundred fifty".