51725471 has 4 divisors (see below), whose sum is σ = 59114832. Its totient is φ = 44336112.

The previous prime is 51725461. The next prime is 51725489. The reversal of 51725471 is 17452715.

51725471 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51725471 is a prime.

It is a super-3 number, since 3×51725471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51725461) by changing a digit.

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, 3694670 + ... + 3694683.

It is an arithmetic number, because the mean of its divisors is an integer number (14778708).

Almost surely, 2^51725471 is an apocalyptic number.

51725471 is a deficient number, since it is larger than the sum of its proper divisors (7389361).

51725471 is an equidigital number, since it uses as much as digits as its factorization.

51725471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7389360.

The product of its digits is 9800, while the sum is 32.

The square root of 51725471 is about 7192.0421995425. The cubic root of 51725471 is about 372.5931085659.

The spelling of 51725471 in words is "fifty-one million, seven hundred twenty-five thousand, four hundred seventy-one".