51524065 has 4 divisors (see below), whose sum is σ = 61828884. Its totient is φ = 41219248.

The previous prime is 51524063. The next prime is 51524107. The reversal of 51524065 is 56042515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56042515 = 5 ⋅11208503.

It can be written as a sum of positive squares in 2 ways, for example, as 25391521 + 26132544 = 5039^2 + 5112^2 .

It is a cyclic number.

It is not a de Polignac number, because 51524065 - 2¹ = 51524063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51524063) 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 in 3 ways as a sum of consecutive naturals, for example, 5152402 + ... + 5152411.

It is an arithmetic number, because the mean of its divisors is an integer number (15457221).

Almost surely, 2^51524065 is an apocalyptic number.

It is an amenable number.

51524065 is a deficient number, since it is larger than the sum of its proper divisors (10304819).

51524065 is a wasteful number, since it uses less digits than its factorization.

51524065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10304818.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 51524065 is about 7178.0265393770. The cubic root of 51524065 is about 372.1088848603.

The spelling of 51524065 in words is "fifty-one million, five hundred twenty-four thousand, sixty-five".