51486025 has 6 divisors (see below), whose sum is σ = 63842702. Its totient is φ = 41188800.

The previous prime is 51485977. The next prime is 51486053. The reversal of 51486025 is 52068415.

It can be written as a sum of positive squares in 3 ways, for example, as 962361 + 50523664 = 981^2 + 7108^2 .

It is not a de Polignac number, because 51486025 - 2⁷ = 51485897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1029696 + ... + 1029745.

Almost surely, 2^51486025 is an apocalyptic number.

It is an amenable number.

51486025 is a deficient number, since it is larger than the sum of its proper divisors (12356677).

51486025 is a wasteful number, since it uses less digits than its factorization.

51486025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059451 (or 2059446 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 51486025 is about 7175.3762967527. The cubic root of 51486025 is about 372.0172868407.

The spelling of 51486025 in words is "fifty-one million, four hundred eighty-six thousand, twenty-five".