51423461 has 2 divisors, whose sum is σ = 51423462. Its totient is φ = 51423460.

The previous prime is 51423457. The next prime is 51423473. The reversal of 51423461 is 16432415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51394561 + 28900 = 7169^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 51423461 - 2² = 51423457 is a prime.

It is a super-3 number, since 3×51423461³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51423461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51423431) 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 as a sum of consecutive naturals, namely, 25711730 + 25711731.

It is an arithmetic number, because the mean of its divisors is an integer number (25711731).

Almost surely, 2^51423461 is an apocalyptic number.

It is an amenable number.

51423461 is a deficient number, since it is larger than the sum of its proper divisors (1).

51423461 is an equidigital number, since it uses as much as digits as its factorization.

51423461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 26.

The square root of 51423461 is about 7171.0153395457. The cubic root of 51423461 is about 371.8665383382.

Adding to 51423461 its reverse (16432415), we get a palindrome (67855876).

The spelling of 51423461 in words is "fifty-one million, four hundred twenty-three thousand, four hundred sixty-one".