51027550 has 48 divisors (see below), whose sum is σ = 111992832. Its totient is φ = 16927200.

The previous prime is 51027517. The next prime is 51027553. The reversal of 51027550 is 5572015.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51027553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8499 + ... + 13201.

It is an arithmetic number, because the mean of its divisors is an integer number (2333184).

Almost surely, 2^51027550 is an apocalyptic number.

51027550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51027550 is an abundant number, since it is smaller than the sum of its proper divisors (60965282).

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

51027550 is a wasteful number, since it uses less digits than its factorization.

51027550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4753 (or 4748 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 51027550 is about 7143.3570539348. The cubic root of 51027550 is about 370.9097408801.

Adding to 51027550 its reverse (5572015), we get a palindrome (56599565).

The spelling of 51027550 in words is "fifty-one million, twenty-seven thousand, five hundred fifty".