51827860 has 24 divisors (see below), whose sum is σ = 124387200. Its totient is φ = 17769504.

The previous prime is 51827837. The next prime is 51827863. The reversal of 51827860 is 6872815.

It is a super-2 number, since 2×51827860² = 5372254144359200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51827863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184960 + ... + 185239.

It is an arithmetic number, because the mean of its divisors is an integer number (5182800).

Almost surely, 2^51827860 is an apocalyptic number.

It is an amenable number.

51827860 is an abundant number, since it is smaller than the sum of its proper divisors (72559340).

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

51827860 is a wasteful number, since it uses less digits than its factorization.

51827860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370215 (or 370213 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 51827860 is about 7199.1568950815. The cubic root of 51827860 is about 372.8387921129.

The spelling of 51827860 in words is "fifty-one million, eight hundred twenty-seven thousand, eight hundred sixty".