51332345 has 4 divisors (see below), whose sum is σ = 61598820. Its totient is φ = 41065872.

The previous prime is 51332339. The next prime is 51332353. The reversal of 51332345 is 54323315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31449664 + 19882681 = 5608^2 + 4459^2 .

It is a cyclic number.

It is not a de Polignac number, because 51332345 - 2⁸ = 51332089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5133230 + ... + 5133239.

It is an arithmetic number, because the mean of its divisors is an integer number (15399705).

Almost surely, 2^51332345 is an apocalyptic number.

It is an amenable number.

51332345 is a deficient number, since it is larger than the sum of its proper divisors (10266475).

51332345 is a wasteful number, since it uses less digits than its factorization.

51332345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10266474.

The product of its digits is 5400, while the sum is 26.

The square root of 51332345 is about 7164.6594475941. The cubic root of 51332345 is about 371.6467746821.

The spelling of 51332345 in words is "fifty-one million, three hundred thirty-two thousand, three hundred forty-five".