51100049 has 32 divisors (see below), whose sum is σ = 69672960. Its totient is φ = 36187200.

The previous prime is 51100033. The next prime is 51100057. The reversal of 51100049 is 94000115.

51100049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51100049 - 2⁴ = 51100033 is a prime.

It is a super-2 number, since 2×51100049² = 5222430015604802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51100049.

It is not an unprimeable number, because it can be changed into a prime (51100019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70712 + ... + 71430.

It is an arithmetic number, because the mean of its divisors is an integer number (2177280).

Almost surely, 2^51100049 is an apocalyptic number.

It is an amenable number.

51100049 is a deficient number, since it is larger than the sum of its proper divisors (18572911).

51100049 is a wasteful number, since it uses less digits than its factorization.

51100049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 51100049 is about 7148.4298275915. The cubic root of 51100049 is about 371.0853183223.

The spelling of 51100049 in words is "fifty-one million, one hundred thousand, forty-nine".