51525797 has 4 divisors (see below), whose sum is σ = 51601056. Its totient is φ = 51450540.

The previous prime is 51525787. The next prime is 51525823. The reversal of 51525797 is 79752515.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79752515 = 5 ⋅15950503.

It is a cyclic number.

It is not a de Polignac number, because 51525797 - 2⁴ = 51525781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51525707) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 36593 + ... + 37974.

It is an arithmetic number, because the mean of its divisors is an integer number (12900264).

Almost surely, 2^51525797 is an apocalyptic number.

It is an amenable number.

51525797 is a deficient number, since it is larger than the sum of its proper divisors (75259).

51525797 is an equidigital number, since it uses as much as digits as its factorization.

51525797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75258.

The product of its digits is 110250, while the sum is 41.

The square root of 51525797 is about 7178.1471843366. The cubic root of 51525797 is about 372.1130543383.

The spelling of 51525797 in words is "fifty-one million, five hundred twenty-five thousand, seven hundred ninety-seven".