51990327 has 24 divisors (see below), whose sum is σ = 82492800. Its totient is φ = 31405968.

The previous prime is 51990307. The next prime is 51990343. The reversal of 51990327 is 72309915.

It is not a de Polignac number, because 51990327 - 2²⁴ = 35213111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51990291 and 51990300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51990307) 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, 2677 + ... + 10542.

It is an arithmetic number, because the mean of its divisors is an integer number (3437200).

Almost surely, 2^51990327 is an apocalyptic number.

51990327 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

51990327 is a deficient number, since it is larger than the sum of its proper divisors (30502473).

51990327 is a wasteful number, since it uses less digits than its factorization.

51990327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13267 (or 13264 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 51990327 is about 7210.4318178595. The cubic root of 51990327 is about 373.2279702847.

The spelling of 51990327 in words is "fifty-one million, nine hundred ninety thousand, three hundred twenty-seven".