51188525 has 6 divisors (see below), whose sum is σ = 63473802. Its totient is φ = 40950800.

The previous prime is 51188519. The next prime is 51188537. The reversal of 51188525 is 52588115.

It can be written as a sum of positive squares in 3 ways, for example, as 3108169 + 48080356 = 1763^2 + 6934^2 .

It is not a de Polignac number, because 51188525 - 2⁶ = 51188461 is a prime.

It is a Duffinian number.

It is a congruent 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, 1023746 + ... + 1023795.

It is an arithmetic number, because the mean of its divisors is an integer number (10578967).

Almost surely, 2^51188525 is an apocalyptic number.

It is an amenable number.

51188525 is a deficient number, since it is larger than the sum of its proper divisors (12285277).

51188525 is a wasteful number, since it uses less digits than its factorization.

51188525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047551 (or 2047546 counting only the distinct ones).

The product of its digits is 16000, while the sum is 35.

The square root of 51188525 is about 7154.6156430657. The cubic root of 51188525 is about 371.2993638706.

The spelling of 51188525 in words is "fifty-one million, one hundred eighty-eight thousand, five hundred twenty-five".