51275650 has 12 divisors (see below), whose sum is σ = 95372802. Its totient is φ = 20510240.

The previous prime is 51275633. The next prime is 51275663. The reversal of 51275650 is 5657215.

It can be written as a sum of positive squares in 3 ways, for example, as 49660209 + 1615441 = 7047^2 + 1271^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 512707 + ... + 512806.

Almost surely, 2^51275650 is an apocalyptic number.

51275650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51275650 is a deficient number, since it is larger than the sum of its proper divisors (44097152).

51275650 is a wasteful number, since it uses less digits than its factorization.

51275650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025525 (or 1025520 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 51275650 is about 7160.7017812502. The cubic root of 51275650 is about 371.5099001254.

The spelling of 51275650 in words is "fifty-one million, two hundred seventy-five thousand, six hundred fifty".