51026121 has 24 divisors (see below), whose sum is σ = 78376896. Its totient is φ = 31917600.

The previous prime is 51026119. The next prime is 51026123. The reversal of 51026121 is 12162015.

51026121 is a `hidden beast` number, since 51 + 0 + 2 + 612 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (51026119) and next prime (51026123).

It is not a de Polignac number, because 51026121 - 2¹ = 51026119 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51026094 and 51026103.

It is not an unprimeable number, because it can be changed into a prime (51026123) 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 23 ways as a sum of consecutive naturals, for example, 8646 + ... + 13296.

It is an arithmetic number, because the mean of its divisors is an integer number (3265704).

Almost surely, 2^51026121 is an apocalyptic number.

It is an amenable number.

51026121 is a deficient number, since it is larger than the sum of its proper divisors (27350775).

51026121 is a wasteful number, since it uses less digits than its factorization.

51026121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4733 (or 4730 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 51026121 is about 7143.2570302349. The cubic root of 51026121 is about 370.9062784697.

Adding to 51026121 its reverse (12162015), we get a palindrome (63188136).

The spelling of 51026121 in words is "fifty-one million, twenty-six thousand, one hundred twenty-one".