51347525 has 12 divisors (see below), whose sum is σ = 63956100. Its totient is φ = 40894080.

The previous prime is 51347509. The next prime is 51347533. The reversal of 51347525 is 52574315.

It can be written as a sum of positive squares in 6 ways, for example, as 894916 + 50452609 = 946^2 + 7103^2 .

It is not a de Polignac number, because 51347525 - 2⁴ = 51347509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51347491 and 51347500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1241 + ... + 10209.

It is an arithmetic number, because the mean of its divisors is an integer number (5329675).

Almost surely, 2^51347525 is an apocalyptic number.

It is an amenable number.

51347525 is a deficient number, since it is larger than the sum of its proper divisors (12608575).

51347525 is a wasteful number, since it uses less digits than its factorization.

51347525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9208 (or 9203 counting only the distinct ones).

The product of its digits is 21000, while the sum is 32.

The square root of 51347525 is about 7165.7187357585. The cubic root of 51347525 is about 371.6834055304.

The spelling of 51347525 in words is "fifty-one million, three hundred forty-seven thousand, five hundred twenty-five".