51106525 has 12 divisors (see below), whose sum is σ = 63597492. Its totient is φ = 40739840.

The previous prime is 51106511. The next prime is 51106543. The reversal of 51106525 is 52560115.

It can be written as a sum of positive squares in 6 ways, for example, as 41209 + 51065316 = 203^2 + 7146^2 .

It is not a de Polignac number, because 51106525 - 2⁵ = 51106493 is a prime.

It is a super-2 number, since 2×51106525² = 5223753795151250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51106525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3837 + ... + 10813.

It is an arithmetic number, because the mean of its divisors is an integer number (5299791).

Almost surely, 2^51106525 is an apocalyptic number.

It is an amenable number.

51106525 is a deficient number, since it is larger than the sum of its proper divisors (12490967).

51106525 is a wasteful number, since it uses less digits than its factorization.

51106525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7280 (or 7275 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 51106525 is about 7148.8827798475. The cubic root of 51106525 is about 371.1009937607.

The spelling of 51106525 in words is "fifty-one million, one hundred six thousand, five hundred twenty-five".