51800058 has 24 divisors (see below), whose sum is σ = 112708596. Its totient is φ = 17193600.

The previous prime is 51800057. The next prime is 51800069. The reversal of 51800058 is 85000815.

It can be written as a sum of positive squares in 2 ways, for example, as 51796809 + 3249 = 7197^2 + 57^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51800057) 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, 1633 + ... + 10308.

Almost surely, 2^51800058 is an apocalyptic number.

51800058 is an abundant number, since it is smaller than the sum of its proper divisors (60908538).

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

51800058 is a wasteful number, since it uses less digits than its factorization.

51800058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12190 (or 12187 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 51800058 is about 7197.2257155101. The cubic root of 51800058 is about 372.7721129296.

The spelling of 51800058 in words is "fifty-one million, eight hundred thousand, fifty-eight".