51490850 has 24 divisors (see below), whose sum is σ = 97815168. Its totient is φ = 20157200.

The previous prime is 51490843. The next prime is 51490883. The reversal of 51490850 is 5809415.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8606 + ... + 13305.

It is an arithmetic number, because the mean of its divisors is an integer number (4075632).

Almost surely, 2^51490850 is an apocalyptic number.

51490850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51490850 is a deficient number, since it is larger than the sum of its proper divisors (46324318).

51490850 is a wasteful number, since it uses less digits than its factorization.

51490850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21970 (or 21965 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 51490850 is about 7175.7125081765. The cubic root of 51490850 is about 372.0289076468.

The spelling of 51490850 in words is "fifty-one million, four hundred ninety thousand, eight hundred fifty".