51051025 has 9 divisors (see below), whose sum is σ = 63347601. Its totient is φ = 40812240.

The previous prime is 51051001. The next prime is 51051029. The reversal of 51051025 is 52015015.

The square root of 51051025 is 7145.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 19421649 + 31629376 = 4407^2 + 5624^2 .

It is not a de Polignac number, because 51051025 - 2⁷ = 51050897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51050993 and 51051011.

It is not an unprimeable number, because it can be changed into a prime (51051029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 35011 + ... + 36439.

Almost surely, 2^51051025 is an apocalyptic number.

51051025 is the 7145-th square number.

51051025 is the 3573-rd centered octagonal number.

It is an amenable number.

51051025 is a deficient number, since it is larger than the sum of its proper divisors (12296576).

51051025 is an frugal number, since it uses more digits than its factorization.

51051025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868 (or 1434 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 19.

The cubic root of 51051025 is about 370.9666106252.

The spelling of 51051025 in words is "fifty-one million, fifty-one thousand, twenty-five".