51534025 has 6 divisors (see below), whose sum is σ = 63902222. Its totient is φ = 41227200.

The previous prime is 51534019. The next prime is 51534031. The reversal of 51534025 is 52043515.

It is an interprime number because it is at equal distance from previous prime (51534019) and next prime (51534031).

It can be written as a sum of positive squares in 3 ways, for example, as 4048144 + 47485881 = 2012^2 + 6891^2 .

It is not a de Polignac number, because 51534025 - 2¹³ = 51525833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 2061361 = 51534025 / (5 + 1 + 5 + 3 + 4 + 0 + 2 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1030656 + ... + 1030705.

Almost surely, 2^51534025 is an apocalyptic number.

It is an amenable number.

51534025 is a deficient number, since it is larger than the sum of its proper divisors (12368197).

51534025 is a wasteful number, since it uses less digits than its factorization.

51534025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061371 (or 2061366 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 51534025 is about 7178.7202898567. The cubic root of 51534025 is about 372.1328604899.

The spelling of 51534025 in words is "fifty-one million, five hundred thirty-four thousand, twenty-five".