51030250 has 64 divisors (see below), whose sum is σ = 100818432. Its totient is φ = 19320000.

The previous prime is 51030233. The next prime is 51030263. The reversal of 51030250 is 5203015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 505200 + ... + 505300.

It is an arithmetic number, because the mean of its divisors is an integer number (1575288).

Almost surely, 2^51030250 is an apocalyptic number.

51030250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51030250 is a deficient number, since it is larger than the sum of its proper divisors (49788182).

51030250 is a wasteful number, since it uses less digits than its factorization.

51030250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 51030250 is about 7143.5460382082. The cubic root of 51030250 is about 370.9162826968.

Adding to 51030250 its reverse (5203015), we get a palindrome (56233265).

The spelling of 51030250 in words is "fifty-one million, thirty thousand, two hundred fifty".