51800499 has 8 divisors (see below), whose sum is σ = 76741520. Its totient is φ = 34533648.

The previous prime is 51800491. The next prime is 51800501. The reversal of 51800499 is 99400815.

It is not a de Polignac number, because 51800499 - 2³ = 51800491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51800491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959242 + ... + 959295.

It is an arithmetic number, because the mean of its divisors is an integer number (9592690).

Almost surely, 2^51800499 is an apocalyptic number.

51800499 is a deficient number, since it is larger than the sum of its proper divisors (24941021).

51800499 is a wasteful number, since it uses less digits than its factorization.

51800499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918546 (or 1918540 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 51800499 is about 7197.2563522498. The cubic root of 51800499 is about 372.7731707922.

The spelling of 51800499 in words is "fifty-one million, eight hundred thousand, four hundred ninety-nine".