51487950 has 24 divisors (see below), whose sum is σ = 127690488. Its totient is φ = 13730080.

The previous prime is 51487939. The next prime is 51487981. The reversal of 51487950 is 5978415.

It is a junction number, because it is equal to n+sod(n) for n = 51487899 and 51487908.

It is a congruent number.

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, 171477 + ... + 171776.

It is an arithmetic number, because the mean of its divisors is an integer number (5320437).

Almost surely, 2^51487950 is an apocalyptic number.

51487950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51487950 is an abundant number, since it is smaller than the sum of its proper divisors (76202538).

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

51487950 is a wasteful number, since it uses less digits than its factorization.

51487950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343268 (or 343263 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 51487950 is about 7175.5104348053. The cubic root of 51487950 is about 372.0219232079.

The spelling of 51487950 in words is "fifty-one million, four hundred eighty-seven thousand, nine hundred fifty".