51530326 has 4 divisors (see below), whose sum is σ = 77295492. Its totient is φ = 25765162.

The previous prime is 51530321. The next prime is 51530329. The reversal of 51530326 is 62303515.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62303515 = 5 ⋅12460703.

It is a self number, because there is not a number n which added to its sum of digits gives 51530326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51530321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12882580 + ... + 12882583.

It is an arithmetic number, because the mean of its divisors is an integer number (19323873).

Almost surely, 2^51530326 is an apocalyptic number.

51530326 is a deficient number, since it is larger than the sum of its proper divisors (25765166).

51530326 is a wasteful number, since it uses less digits than its factorization.

51530326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25765165.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 51530326 is about 7178.4626487849. The cubic root of 51530326 is about 372.1239566483.

The spelling of 51530326 in words is "fifty-one million, five hundred thirty thousand, three hundred twenty-six".