51270084 has 36 divisors (see below), whose sum is σ = 134401904. Its totient is φ = 17089704.

The previous prime is 51270083. The next prime is 51270101. The reversal of 51270084 is 48007215.

51270084 is a `hidden beast` number, since 512 + 70 + 0 + 84 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-4 number, since 4×51270084⁴ (a number of 32 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (51270083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25402 + ... + 27345.

Almost surely, 2^51270084 is an apocalyptic number.

51270084 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51270084 is an abundant number, since it is smaller than the sum of its proper divisors (83131820).

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

51270084 is a wasteful number, since it uses less digits than its factorization.

51270084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52766 (or 52752 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 51270084 is about 7160.3131216449. The cubic root of 51270084 is about 371.4964571044.

Adding to 51270084 its reverse (48007215), we get a palindrome (99277299).

The spelling of 51270084 in words is "fifty-one million, two hundred seventy thousand, eighty-four".