51323315 has 4 divisors (see below), whose sum is σ = 61587984. Its totient is φ = 41058648.

The previous prime is 51323309. The next prime is 51323347. The reversal of 51323315 is 51332315.

51323315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51332315 = 5 ⋅10266463.

It is a cyclic number.

It is not a de Polignac number, because 51323315 - 2²² = 47129011 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 5132327 + ... + 5132336.

It is an arithmetic number, because the mean of its divisors is an integer number (15396996).

Almost surely, 2^51323315 is an apocalyptic number.

51323315 is a deficient number, since it is larger than the sum of its proper divisors (10264669).

51323315 is a wasteful number, since it uses less digits than its factorization.

51323315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10264668.

The product of its digits is 1350, while the sum is 23.

The square root of 51323315 is about 7164.0292433797. The cubic root of 51323315 is about 371.6249809692.

The spelling of 51323315 in words is "fifty-one million, three hundred twenty-three thousand, three hundred fifteen".