51671700 has 54 divisors (see below), whose sum is σ = 161964894. Its totient is φ = 13778880.

The previous prime is 51671689. The next prime is 51671713. The reversal of 51671700 is 717615.

It can be written as a sum of positive squares in 3 ways, for example, as 4356 + 51667344 = 66^2 + 7188^2 .

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 27807 + ... + 29606.

Almost surely, 2^51671700 is an apocalyptic number.

51671700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51671700 is an abundant number, since it is smaller than the sum of its proper divisors (110293194).

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

51671700 is a wasteful number, since it uses less digits than its factorization.

51671700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57433 (or 57423 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 51671700 is about 7188.3029986221. The cubic root of 51671700 is about 372.4639545921.

The spelling of 51671700 in words is "fifty-one million, six hundred seventy-one thousand, seven hundred".