51248700 has 252 divisors, whose sum is σ = 180257560. Its totient is φ = 12597120.

The previous prime is 51248677. The next prime is 51248707. The reversal of 51248700 is 784215.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51248707) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 1385082 + ... + 1385118.

Almost surely, 2^51248700 is an apocalyptic number.

51248700 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 51248700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90128780).

51248700 is an abundant number, since it is smaller than the sum of its proper divisors (129008860).

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

51248700 is a wasteful number, since it uses less digits than its factorization.

51248700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 66 counting only the distinct ones).

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

The square root of 51248700 is about 7158.8197351239. The cubic root of 51248700 is about 371.4448013477. Note that the first 3 decimals are identical.

It can be divided in two parts, 5124 and 8700, that added together give a cube (13824 = 24³).

The spelling of 51248700 in words is "fifty-one million, two hundred forty-eight thousand, seven hundred".