51486529 has 8 divisors (see below), whose sum is σ = 53213832. Its totient is φ = 49781760.

The previous prime is 51486511. The next prime is 51486553. The reversal of 51486529 is 92568415.

It can be written as a sum of positive squares in 4 ways, for example, as 15210000 + 36276529 = 3900^2 + 6023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51486529 - 2⁷ = 51486401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51486491 and 51486500.

It is not an unprimeable number, because it can be changed into a prime (51486509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924 + ... + 10189.

It is an arithmetic number, because the mean of its divisors is an integer number (6651729).

Almost surely, 2^51486529 is an apocalyptic number.

It is an amenable number.

51486529 is a deficient number, since it is larger than the sum of its proper divisors (1727303).

51486529 is a wasteful number, since it uses less digits than its factorization.

51486529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11267.

The product of its digits is 86400, while the sum is 40.

The square root of 51486529 is about 7175.4114167760. The cubic root of 51486529 is about 372.0185007371.

The spelling of 51486529 in words is "fifty-one million, four hundred eighty-six thousand, five hundred twenty-nine".