51272650 has 96 divisors (see below), whose sum is σ = 114742656. Its totient is φ = 16800000.

The previous prime is 51272597. The next prime is 51272653. The reversal of 51272650 is 5627215.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51272653) 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, 507600 + ... + 507700.

It is an arithmetic number, because the mean of its divisors is an integer number (1195236).

Almost surely, 2^51272650 is an apocalyptic number.

51272650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51272650 is an abundant number, since it is smaller than the sum of its proper divisors (63470006).

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

51272650 is a wasteful number, since it uses less digits than its factorization.

51272650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 51272650 is about 7160.4923015111. The cubic root of 51272650 is about 371.5026546367.

Adding to 51272650 its reverse (5627215), we get a palindrome (56899865).

It can be divided in two parts, 5127 and 2650, that added together give a palindrome (7777).

The spelling of 51272650 in words is "fifty-one million, two hundred seventy-two thousand, six hundred fifty".