51325550 has 24 divisors (see below), whose sum is σ = 101082816. Its totient is φ = 19322240.

The previous prime is 51325523. The next prime is 51325559. The reversal of 51325550 is 5552315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51325559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29342 + ... + 31041.

It is an arithmetic number, because the mean of its divisors is an integer number (4211784).

Almost surely, 2^51325550 is an apocalyptic number.

51325550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51325550 is a deficient number, since it is larger than the sum of its proper divisors (49757266).

51325550 is a wasteful number, since it uses less digits than its factorization.

51325550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60412 (or 60407 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 51325550 is about 7164.1852293195. The cubic root of 51325550 is about 371.6303753322.

Adding to 51325550 its reverse (5552315), we get a palindrome (56877865).

The spelling of 51325550 in words is "fifty-one million, three hundred twenty-five thousand, five hundred fifty".