51769121 has 2 divisors, whose sum is σ = 51769122. Its totient is φ = 51769120.

The previous prime is 51769117. The next prime is 51769171. The reversal of 51769121 is 12196715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39942400 + 11826721 = 6320^2 + 3439^2 .

It is a cyclic number.

It is not a de Polignac number, because 51769121 - 2² = 51769117 is a prime.

It is a super-2 number, since 2×51769121² = 5360083778225282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51769111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25884560 + 25884561.

It is an arithmetic number, because the mean of its divisors is an integer number (25884561).

Almost surely, 2^51769121 is an apocalyptic number.

It is an amenable number.

51769121 is a deficient number, since it is larger than the sum of its proper divisors (1).

51769121 is an equidigital number, since it uses as much as digits as its factorization.

51769121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 32.

The square root of 51769121 is about 7195.0761635997. The cubic root of 51769121 is about 372.6978868384.

The spelling of 51769121 in words is "fifty-one million, seven hundred sixty-nine thousand, one hundred twenty-one".