51030490 has 32 divisors (see below), whose sum is σ = 105237504. Its totient is φ = 17452800.

The previous prime is 51030449. The next prime is 51030509. The reversal of 51030490 is 9403015.

51030490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51030490² = 5208221819280200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41890 + ... + 43090.

It is an arithmetic number, because the mean of its divisors is an integer number (3288672).

Almost surely, 2^51030490 is an apocalyptic number.

51030490 is an abundant number, since it is smaller than the sum of its proper divisors (54207014).

51030490 is a wasteful number, since it uses less digits than its factorization.

51030490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 51030490 is about 7143.5628365683. The cubic root of 51030490 is about 370.9168641805.

The spelling of 51030490 in words is "fifty-one million, thirty thousand, four hundred ninety".