51303290 has 16 divisors (see below), whose sum is σ = 93210912. Its totient is φ = 20329104.

The previous prime is 51303283. The next prime is 51303313. The reversal of 51303290 is 9230315.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22904 + ... + 25043.

It is an arithmetic number, because the mean of its divisors is an integer number (5825682).

Almost surely, 2^51303290 is an apocalyptic number.

51303290 is a deficient number, since it is larger than the sum of its proper divisors (41907622).

51303290 is a wasteful number, since it uses less digits than its factorization.

51303290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48061.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 51303290 is about 7162.6314996655. The cubic root of 51303290 is about 371.5766419358.

The spelling of 51303290 in words is "fifty-one million, three hundred three thousand, two hundred ninety".