51486600 has 192 divisors, whose sum is σ = 180792000. Its totient is φ = 12006400.

The previous prime is 51486583. The next prime is 51486607. The reversal of 51486600 is 668415.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51486607) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 191266 + ... + 191534.

It is an arithmetic number, because the mean of its divisors is an integer number (941625).

Almost surely, 2^51486600 is an apocalyptic number.

51486600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51486600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90396000).

51486600 is an abundant number, since it is smaller than the sum of its proper divisors (129305400).

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

51486600 is a wasteful number, since it uses less digits than its factorization.

51486600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 51486600 is about 7175.4163642258. The cubic root of 51486600 is about 372.0186717417.

The spelling of 51486600 in words is "fifty-one million, four hundred eighty-six thousand, six hundred".