51125361 has 16 divisors (see below), whose sum is σ = 78089088. Its totient is φ = 29145600.

The previous prime is 51125353. The next prime is 51125363. The reversal of 51125361 is 16352115.

It is not a de Polignac number, because 51125361 - 2³ = 51125353 is a prime.

It is a super-2 number, since 2×51125361² = 5227605074760642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51125363) 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 15 ways as a sum of consecutive naturals, for example, 7041 + ... + 12321.

It is an arithmetic number, because the mean of its divisors is an integer number (4880568).

Almost surely, 2^51125361 is an apocalyptic number.

It is an amenable number.

51125361 is a deficient number, since it is larger than the sum of its proper divisors (26963727).

51125361 is a wasteful number, since it uses less digits than its factorization.

51125361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5752.

The product of its digits is 900, while the sum is 24.

The square root of 51125361 is about 7150.2000671310. The cubic root of 51125361 is about 371.1465795885.

Adding to 51125361 its reverse (16352115), we get a palindrome (67477476).

The spelling of 51125361 in words is "fifty-one million, one hundred twenty-five thousand, three hundred sixty-one".