51998359 has 12 divisors (see below), whose sum is σ = 64047024. Its totient is φ = 41947584.

The previous prime is 51998351. The next prime is 51998389. The reversal of 51998359 is 95389915.

It is a happy number.

It is not a de Polignac number, because 51998359 - 2³ = 51998351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51998351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30379 + ... + 32044.

It is an arithmetic number, because the mean of its divisors is an integer number (5337252).

Almost surely, 2^51998359 is an apocalyptic number.

51998359 is a deficient number, since it is larger than the sum of its proper divisors (12048665).

51998359 is a wasteful number, since it uses less digits than its factorization.

51998359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62454 (or 62447 counting only the distinct ones).

The product of its digits is 437400, while the sum is 49.

The square root of 51998359 is about 7210.9887671525. The cubic root of 51998359 is about 373.2471893258.

The spelling of 51998359 in words is "fifty-one million, nine hundred ninety-eight thousand, three hundred fifty-nine".