51799806 has 24 divisors (see below), whose sum is σ = 112459464. Its totient is φ = 17231760.

The previous prime is 51799793. The next prime is 51799807. The reversal of 51799806 is 60899715.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51799807) 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, 7216 + ... + 12476.

It is an arithmetic number, because the mean of its divisors is an integer number (4685811).

Almost surely, 2^51799806 is an apocalyptic number.

51799806 is an abundant number, since it is smaller than the sum of its proper divisors (60659658).

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

51799806 is a wasteful number, since it uses less digits than its factorization.

51799806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5816 (or 5813 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 51799806 is about 7197.2082087432. The cubic root of 51799806 is about 372.7715084340.

Subtracting 51799806 from its reverse (60899715), we obtain a palindrome (9099909).

The spelling of 51799806 in words is "fifty-one million, seven hundred ninety-nine thousand, eight hundred six".