51375650 has 24 divisors (see below), whose sum is σ = 95873700. Its totient is φ = 20482560.

The previous prime is 51375641. The next prime is 51375659. The reversal of 51375650 is 5657315.

It is an interprime number because it is at equal distance from previous prime (51375641) and next prime (51375659).

It can be written as a sum of positive squares in 6 ways, for example, as 4439449 + 46936201 = 2107^2 + 6851^2 .

It is not an unprimeable number, because it can be changed into a prime (51375659) 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, 15326 + ... + 18374.

Almost surely, 2^51375650 is an apocalyptic number.

51375650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51375650 is a deficient number, since it is larger than the sum of its proper divisors (44498050).

51375650 is a wasteful number, since it uses less digits than its factorization.

51375650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398 (or 3393 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 51375650 is about 7167.6809359792. The cubic root of 51375650 is about 371.7512548750.

It can be divided in two parts, 51375 and 650, that added together give a palindrome (52025).

The spelling of 51375650 in words is "fifty-one million, three hundred seventy-five thousand, six hundred fifty".