51847020 has 48 divisors (see below), whose sum is σ = 161303520. Its totient is φ = 13825728.

The previous prime is 51847013. The next prime is 51847057. The reversal of 51847020 is 2074815.

It is a super-2 number, since 2×51847020² = 5376226965760800, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47467 + ... + 48546.

It is an arithmetic number, because the mean of its divisors is an integer number (3360490).

Almost surely, 2^51847020 is an apocalyptic number.

It is an amenable number.

51847020 is an abundant number, since it is smaller than the sum of its proper divisors (109456500).

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

51847020 is a wasteful number, since it uses less digits than its factorization.

51847020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96031 (or 96023 counting only the distinct ones).

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

The square root of 51847020 is about 7200.4874834972. The cubic root of 51847020 is about 372.8847307975.

The spelling of 51847020 in words is "fifty-one million, eight hundred forty-seven thousand, twenty".